2023-02-24 00:09:24 +00:00
|
|
|
#include "git-compat-util.h"
|
|
|
|
#include "alloc.h"
|
2019-05-23 17:27:23 +00:00
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|
|
#include "dir.h"
|
2023-02-24 00:09:27 +00:00
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|
|
#include "hex.h"
|
2018-03-23 17:20:59 +00:00
|
|
|
#include "repository.h"
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
#include "refs.h"
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|
|
|
#include "object.h"
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|
|
|
#include "commit.h"
|
2005-07-28 21:33:17 +00:00
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|
|
#include "tag.h"
|
2017-08-18 22:20:26 +00:00
|
|
|
#include "packfile.h"
|
2018-03-23 17:20:59 +00:00
|
|
|
#include "object-store.h"
|
2019-05-13 23:17:08 +00:00
|
|
|
#include "strbuf.h"
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|
|
|
|
|
|
|
struct update_info_ctx {
|
|
|
|
FILE *cur_fp;
|
|
|
|
FILE *old_fp; /* becomes NULL if it differs from cur_fp */
|
|
|
|
struct strbuf cur_sb;
|
|
|
|
struct strbuf old_sb;
|
|
|
|
};
|
|
|
|
|
|
|
|
static void uic_mark_stale(struct update_info_ctx *uic)
|
|
|
|
{
|
|
|
|
fclose(uic->old_fp);
|
|
|
|
uic->old_fp = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int uic_is_stale(const struct update_info_ctx *uic)
|
|
|
|
{
|
|
|
|
return uic->old_fp == NULL;
|
|
|
|
}
|
|
|
|
|
2021-07-13 08:05:18 +00:00
|
|
|
__attribute__((format (printf, 2, 3)))
|
2019-05-13 23:17:08 +00:00
|
|
|
static int uic_printf(struct update_info_ctx *uic, const char *fmt, ...)
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
int ret = -1;
|
|
|
|
|
|
|
|
va_start(ap, fmt);
|
|
|
|
|
|
|
|
if (uic_is_stale(uic)) {
|
|
|
|
ret = vfprintf(uic->cur_fp, fmt, ap);
|
|
|
|
} else {
|
|
|
|
ssize_t r;
|
|
|
|
struct strbuf *cur = &uic->cur_sb;
|
|
|
|
struct strbuf *old = &uic->old_sb;
|
|
|
|
|
|
|
|
strbuf_reset(cur);
|
|
|
|
strbuf_vinsertf(cur, 0, fmt, ap);
|
|
|
|
|
|
|
|
strbuf_reset(old);
|
|
|
|
strbuf_grow(old, cur->len);
|
|
|
|
r = fread(old->buf, 1, cur->len, uic->old_fp);
|
|
|
|
if (r != cur->len || memcmp(old->buf, cur->buf, r))
|
|
|
|
uic_mark_stale(uic);
|
|
|
|
|
|
|
|
if (fwrite(cur->buf, 1, cur->len, uic->cur_fp) == cur->len)
|
|
|
|
ret = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
va_end(ap);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
/*
|
|
|
|
* Create the file "path" by writing to a temporary file and renaming
|
|
|
|
* it into place. The contents of the file come from "generate", which
|
|
|
|
* should return non-zero if it encounters an error.
|
|
|
|
*/
|
2019-05-13 23:17:08 +00:00
|
|
|
static int update_info_file(char *path,
|
|
|
|
int (*generate)(struct update_info_ctx *),
|
|
|
|
int force)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
{
|
|
|
|
char *tmp = mkpathdup("%s_XXXXXX", path);
|
|
|
|
int ret = -1;
|
|
|
|
int fd = -1;
|
2019-05-13 23:17:08 +00:00
|
|
|
FILE *to_close;
|
|
|
|
struct update_info_ctx uic = {
|
|
|
|
.cur_fp = NULL,
|
|
|
|
.old_fp = NULL,
|
|
|
|
.cur_sb = STRBUF_INIT,
|
|
|
|
.old_sb = STRBUF_INIT
|
|
|
|
};
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
|
|
|
|
safe_create_leading_directories(path);
|
2015-01-06 03:50:49 +00:00
|
|
|
fd = git_mkstemp_mode(tmp, 0666);
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
if (fd < 0)
|
|
|
|
goto out;
|
2019-05-13 23:17:08 +00:00
|
|
|
to_close = uic.cur_fp = fdopen(fd, "w");
|
|
|
|
if (!uic.cur_fp)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
goto out;
|
2017-04-16 16:55:58 +00:00
|
|
|
fd = -1;
|
2019-05-13 23:17:08 +00:00
|
|
|
|
|
|
|
/* no problem on ENOENT and old_fp == NULL, it's stale, now */
|
|
|
|
if (!force)
|
|
|
|
uic.old_fp = fopen_or_warn(path, "r");
|
|
|
|
|
|
|
|
/*
|
2019-11-05 17:07:23 +00:00
|
|
|
* uic_printf will compare incremental comparison against old_fp
|
2019-05-13 23:17:08 +00:00
|
|
|
* and mark uic as stale if needed
|
|
|
|
*/
|
|
|
|
ret = generate(&uic);
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
if (ret)
|
|
|
|
goto out;
|
2019-05-13 23:17:08 +00:00
|
|
|
|
|
|
|
/* new file may be shorter than the old one, check here */
|
|
|
|
if (!uic_is_stale(&uic)) {
|
|
|
|
struct stat st;
|
|
|
|
long new_len = ftell(uic.cur_fp);
|
|
|
|
int old_fd = fileno(uic.old_fp);
|
|
|
|
|
|
|
|
if (new_len < 0) {
|
|
|
|
ret = -1;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
if (fstat(old_fd, &st) || (st.st_size != (size_t)new_len))
|
|
|
|
uic_mark_stale(&uic);
|
|
|
|
}
|
|
|
|
|
|
|
|
uic.cur_fp = NULL;
|
2017-04-16 16:55:58 +00:00
|
|
|
if (fclose(to_close))
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
goto out;
|
2019-05-13 23:17:08 +00:00
|
|
|
|
|
|
|
if (uic_is_stale(&uic)) {
|
|
|
|
if (adjust_shared_perm(tmp) < 0)
|
|
|
|
goto out;
|
|
|
|
if (rename(tmp, path) < 0)
|
|
|
|
goto out;
|
|
|
|
} else {
|
|
|
|
unlink(tmp);
|
|
|
|
}
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
ret = 0;
|
|
|
|
|
|
|
|
out:
|
|
|
|
if (ret) {
|
2016-05-08 09:47:55 +00:00
|
|
|
error_errno("unable to update %s", path);
|
2019-05-13 23:17:08 +00:00
|
|
|
if (uic.cur_fp)
|
|
|
|
fclose(uic.cur_fp);
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
else if (fd >= 0)
|
|
|
|
close(fd);
|
|
|
|
unlink(tmp);
|
|
|
|
}
|
|
|
|
free(tmp);
|
2019-05-13 23:17:08 +00:00
|
|
|
if (uic.old_fp)
|
|
|
|
fclose(uic.old_fp);
|
|
|
|
strbuf_release(&uic.old_sb);
|
|
|
|
strbuf_release(&uic.cur_sb);
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
return ret;
|
|
|
|
}
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
2015-05-25 18:39:04 +00:00
|
|
|
static int add_info_ref(const char *path, const struct object_id *oid,
|
2022-08-25 17:09:48 +00:00
|
|
|
int flag UNUSED,
|
2022-08-19 10:08:32 +00:00
|
|
|
void *cb_data)
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
{
|
2019-05-13 23:17:08 +00:00
|
|
|
struct update_info_ctx *uic = cb_data;
|
2018-06-29 01:21:51 +00:00
|
|
|
struct object *o = parse_object(the_repository, oid);
|
2007-01-31 07:24:44 +00:00
|
|
|
if (!o)
|
|
|
|
return -1;
|
2005-10-14 01:57:40 +00:00
|
|
|
|
2019-05-13 23:17:08 +00:00
|
|
|
if (uic_printf(uic, "%s %s\n", oid_to_hex(oid), path) < 0)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
return -1;
|
|
|
|
|
2006-07-12 03:45:31 +00:00
|
|
|
if (o->type == OBJ_TAG) {
|
2018-06-29 01:22:05 +00:00
|
|
|
o = deref_tag(the_repository, o, path, 0);
|
2005-11-02 23:19:13 +00:00
|
|
|
if (o)
|
2019-05-13 23:17:08 +00:00
|
|
|
if (uic_printf(uic, "%s %s^{}\n",
|
2015-11-10 02:22:28 +00:00
|
|
|
oid_to_hex(&o->oid), path) < 0)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
return -1;
|
2005-10-14 01:57:40 +00:00
|
|
|
}
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2019-05-13 23:17:08 +00:00
|
|
|
static int generate_info_refs(struct update_info_ctx *uic)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
{
|
2019-05-13 23:17:08 +00:00
|
|
|
return for_each_ref(add_info_ref, uic);
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
}
|
|
|
|
|
2019-05-13 23:17:08 +00:00
|
|
|
static int update_info_refs(int force)
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
{
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
char *path = git_pathdup("info/refs");
|
2019-05-13 23:17:08 +00:00
|
|
|
int ret = update_info_file(path, generate_info_refs, force);
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
free(path);
|
|
|
|
return ret;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* packs */
|
2005-08-01 19:11:53 +00:00
|
|
|
static struct pack_info {
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
struct packed_git *p;
|
|
|
|
int old_num;
|
|
|
|
int new_num;
|
|
|
|
} **info;
|
|
|
|
static int num_pack;
|
|
|
|
|
|
|
|
static struct pack_info *find_pack_by_name(const char *name)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < num_pack; i++) {
|
|
|
|
struct packed_git *p = info[i]->p;
|
server-info: drop objdirlen pointer arithmetic
When writing objects/info/packs, we use the basename of each pack
(i.e., just the "pack-1234abcd.pack" part). We compute that manually by
adding "objdirlen + 6" to the name.
This _should_ work consistently, as we do not include non-local packs,
meaning everything should be in $objdir/pack/. Before f13d7db4af
(server-info.c: use pack_local like everybody else., 2005-12-05), this
was definitely true, since we computed "local" based on comparing the
objdir string. Since then, we're relying on the code on packfile.c to
match our expectations of p->pack_name and p->local.
I think our expectations do still hold today, but we can be a bit more
defensive by just using pack_basename() to get the base. That
future-proofs us, and should hopefully be more obviously safe to
somebody reading the code.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-04-05 18:14:04 +00:00
|
|
|
if (!strcmp(pack_basename(p), name))
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
return info[i];
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Returns non-zero when we detect that the info in the
|
|
|
|
* old file is useless.
|
|
|
|
*/
|
2019-04-05 18:13:10 +00:00
|
|
|
static int parse_pack_def(const char *packname, int old_cnt)
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
{
|
2019-04-05 18:13:10 +00:00
|
|
|
struct pack_info *i = find_pack_by_name(packname);
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
if (i) {
|
|
|
|
i->old_num = old_cnt;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
else {
|
2005-12-05 06:52:19 +00:00
|
|
|
/* The file describes a pack that is no longer here */
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Returns non-zero when we detect that the info in the
|
|
|
|
* old file is useless.
|
|
|
|
*/
|
|
|
|
static int read_pack_info_file(const char *infofile)
|
|
|
|
{
|
|
|
|
FILE *fp;
|
2019-04-05 18:13:56 +00:00
|
|
|
struct strbuf line = STRBUF_INIT;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
int old_cnt = 0;
|
2019-04-05 18:13:14 +00:00
|
|
|
int stale = 1;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
2017-05-03 10:16:50 +00:00
|
|
|
fp = fopen_or_warn(infofile, "r");
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
if (!fp)
|
2006-07-09 07:44:30 +00:00
|
|
|
return 1; /* nonexistent is not an error. */
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
2019-04-05 18:13:56 +00:00
|
|
|
while (strbuf_getline(&line, fp) != EOF) {
|
2019-04-05 18:13:10 +00:00
|
|
|
const char *arg;
|
2005-12-21 21:48:47 +00:00
|
|
|
|
2019-04-05 18:13:56 +00:00
|
|
|
if (!line.len)
|
2005-12-21 21:48:47 +00:00
|
|
|
continue;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
2019-04-05 18:13:56 +00:00
|
|
|
if (skip_prefix(line.buf, "P ", &arg)) {
|
2019-04-05 18:13:10 +00:00
|
|
|
/* P name */
|
|
|
|
if (parse_pack_def(arg, old_cnt++))
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
goto out_stale;
|
2019-04-05 18:13:56 +00:00
|
|
|
} else if (line.buf[0] == 'D') {
|
2019-04-05 18:13:10 +00:00
|
|
|
/* we used to emit D but that was misguided. */
|
2005-12-05 07:12:36 +00:00
|
|
|
goto out_stale;
|
2019-04-05 18:13:56 +00:00
|
|
|
} else if (line.buf[0] == 'T') {
|
2019-04-05 18:13:10 +00:00
|
|
|
/* we used to emit T but nobody uses it. */
|
|
|
|
goto out_stale;
|
|
|
|
} else {
|
2019-04-05 18:13:56 +00:00
|
|
|
error("unrecognized: %s", line.buf);
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
}
|
|
|
|
}
|
2019-04-05 18:13:14 +00:00
|
|
|
stale = 0;
|
|
|
|
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
out_stale:
|
2019-04-05 18:13:56 +00:00
|
|
|
strbuf_release(&line);
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
fclose(fp);
|
2019-04-05 18:13:14 +00:00
|
|
|
return stale;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int compare_info(const void *a_, const void *b_)
|
|
|
|
{
|
2009-05-01 09:06:36 +00:00
|
|
|
struct pack_info *const *a = a_;
|
|
|
|
struct pack_info *const *b = b_;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
|
|
|
if (0 <= (*a)->old_num && 0 <= (*b)->old_num)
|
|
|
|
/* Keep the order in the original */
|
|
|
|
return (*a)->old_num - (*b)->old_num;
|
|
|
|
else if (0 <= (*a)->old_num)
|
|
|
|
/* Only A existed in the original so B is obviously newer */
|
|
|
|
return -1;
|
|
|
|
else if (0 <= (*b)->old_num)
|
|
|
|
/* The other way around. */
|
|
|
|
return 1;
|
|
|
|
|
2005-12-05 07:02:54 +00:00
|
|
|
/* then it does not matter but at least keep the comparison stable */
|
2005-12-09 01:29:11 +00:00
|
|
|
if ((*a)->p == (*b)->p)
|
|
|
|
return 0;
|
|
|
|
else if ((*a)->p < (*b)->p)
|
|
|
|
return -1;
|
|
|
|
else
|
|
|
|
return 1;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void init_pack_info(const char *infofile, int force)
|
|
|
|
{
|
|
|
|
struct packed_git *p;
|
|
|
|
int stale;
|
2019-05-23 17:27:23 +00:00
|
|
|
int i;
|
|
|
|
size_t alloc = 0;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
2018-08-20 16:52:04 +00:00
|
|
|
for (p = get_all_packs(the_repository); p; p = p->next) {
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
/* we ignore things on alternate path since they are
|
|
|
|
* not available to the pullers in general.
|
|
|
|
*/
|
2019-05-23 17:27:23 +00:00
|
|
|
if (!p->pack_local || !file_exists(p->pack_name))
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
continue;
|
2019-05-23 17:27:23 +00:00
|
|
|
|
|
|
|
i = num_pack++;
|
|
|
|
ALLOC_GROW(info, num_pack, alloc);
|
2021-03-13 16:17:22 +00:00
|
|
|
CALLOC_ARRAY(info[i], 1);
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
info[i]->p = p;
|
|
|
|
info[i]->old_num = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (infofile && !force)
|
|
|
|
stale = read_pack_info_file(infofile);
|
|
|
|
else
|
|
|
|
stale = 1;
|
|
|
|
|
2018-05-02 00:25:30 +00:00
|
|
|
for (i = 0; i < num_pack; i++)
|
|
|
|
if (stale)
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
info[i]->old_num = -1;
|
|
|
|
|
2005-12-05 06:52:19 +00:00
|
|
|
/* renumber them */
|
2016-09-29 15:27:31 +00:00
|
|
|
QSORT(info, num_pack, compare_info);
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
for (i = 0; i < num_pack; i++)
|
|
|
|
info[i]->new_num = i;
|
|
|
|
}
|
|
|
|
|
2014-09-13 20:19:38 +00:00
|
|
|
static void free_pack_info(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < num_pack; i++)
|
|
|
|
free(info[i]);
|
|
|
|
free(info);
|
|
|
|
}
|
|
|
|
|
2019-05-13 23:17:08 +00:00
|
|
|
static int write_pack_info_file(struct update_info_ctx *uic)
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
{
|
2005-12-05 07:12:36 +00:00
|
|
|
int i;
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
for (i = 0; i < num_pack; i++) {
|
2019-05-13 23:17:08 +00:00
|
|
|
if (uic_printf(uic, "P %s\n", pack_basename(info[i]->p)) < 0)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
return -1;
|
|
|
|
}
|
2019-05-13 23:17:08 +00:00
|
|
|
if (uic_printf(uic, "\n") < 0)
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
return -1;
|
|
|
|
return 0;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int update_info_packs(int force)
|
|
|
|
{
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
char *infofile = mkpathdup("%s/info/packs", get_object_directory());
|
|
|
|
int ret;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
|
|
|
|
init_pack_info(infofile, force);
|
2019-05-13 23:17:08 +00:00
|
|
|
ret = update_info_file(infofile, write_pack_info_file, force);
|
2014-09-13 20:19:38 +00:00
|
|
|
free_pack_info();
|
make update-server-info more robust
Since "git update-server-info" may be called automatically
as part of a push or a "gc --auto", we should be robust
against two processes trying to update it simultaneously.
However, we currently use a fixed tempfile, which means that
two simultaneous writers may step on each other's toes and
end up renaming junk into place.
Let's instead switch to using a unique tempfile via mkstemp.
We do not want to use a lockfile here, because it's OK for
two writers to simultaneously update (one will "win" the
rename race, but that's OK; they should be writing the same
information).
While we're there, let's clean up a few other things:
1. Detect write errors. Report them and abort the update
if any are found.
2. Free path memory rather than leaking it (and clean up
the tempfile when necessary).
3. Use the pathdup functions consistently rather than
static buffers or manually calculated lengths.
This last one fixes a potential overflow of "infofile" in
update_info_packs (e.g., by putting large junk into
$GIT_OBJECT_DIRECTORY). However, this overflow was probably
not an interesting attack vector for two reasons:
a. The attacker would need to control the environment to
do this, in which case it was already game-over.
b. During its setup phase, git checks that the directory
actually exists, which means it is probably shorter
than PATH_MAX anyway.
Because both update_info_refs and update_info_packs share
these same failings (and largely duplicate each other), this
patch factors out the improved error-checking version into a
helper function.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-09-13 20:19:20 +00:00
|
|
|
free(infofile);
|
|
|
|
return ret;
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* public */
|
|
|
|
int update_server_info(int force)
|
|
|
|
{
|
|
|
|
/* We would add more dumb-server support files later,
|
|
|
|
* including index of available pack files and their
|
|
|
|
* intended audiences.
|
|
|
|
*/
|
|
|
|
int errs = 0;
|
|
|
|
|
2019-05-13 23:17:08 +00:00
|
|
|
errs = errs | update_info_refs(force);
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
errs = errs | update_info_packs(force);
|
|
|
|
|
2005-12-05 06:52:19 +00:00
|
|
|
/* remove leftover rev-cache file if there is any */
|
2009-04-29 21:22:56 +00:00
|
|
|
unlink_or_warn(git_path("info/rev-cache"));
|
2005-12-05 06:52:19 +00:00
|
|
|
|
[PATCH] Add update-server-info.
The git-update-server-info command prepares informational files
to help clients discover the contents of a repository, and pull
from it via a dumb transport protocols. Currently, the
following files are produced.
- The $repo/info/refs file lists the name of heads and tags
available in the $repo/refs/ directory, along with their
SHA1. This can be used by git-ls-remote command running on
the client side.
- The $repo/info/rev-cache file describes the commit ancestry
reachable from references in the $repo/refs/ directory. This
file is in an append-only binary format to make the server
side friendly to rsync mirroring scheme, and can be read by
git-show-rev-cache command.
- The $repo/objects/info/pack file lists the name of the packs
available, the interdependencies among them, and the head
commits and tags contained in them. Along with the other two
files, this is designed to help clients to make smart pull
decisions.
The git-receive-pack command is changed to invoke it at the end,
so just after a push to a public repository finishes via "git
push", the server info is automatically updated.
In addition, building of the rev-cache file can be done by a
standalone git-build-rev-cache command separately.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-24 00:54:41 +00:00
|
|
|
return errs;
|
|
|
|
}
|