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loader: install allow for more complete device spec in url

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Rework to simplify and impose sane url syntax.
That is we allow for file://[devname[:fstype]]/package

Reviewed by:	stevek
MFC after:	1 week
Sponsored by:	Juniper Networks
Differential Revision: https://reviews.freebsd.org//D25134
This commit is contained in:
Simon J. Gerraty 2020-06-08 18:13:38 +00:00
parent e28d8a5b26
commit eff7aa697e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=361933
1 changed files with 63 additions and 20 deletions
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83
stand/common/install.c
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@ -184,7 +184,8 @@ cleanup(void)
/*
* usage: install URL
* where: URL = (tftp|file)://[host]/<package>
* where: URL = tftp://[host]/<package>
* or file://[devname[:fstype]]/<package>
*/
static int
install(char *pkgname)
@ -192,8 +193,9 @@ install(char *pkgname)
static char buf[256];
struct fs_ops *proto;
struct preloaded_file *fp;
char *s, *currdev;
const char *devname;
char *e, *s, *currdev;
char *devname;
size_t devnamelen;
int error, fd, i, local;
s = strstr(pkgname, "://");
@ -201,33 +203,73 @@ install(char *pkgname)
goto invalid_url;
i = s - pkgname;
s += 3;
if (*s == '\0')
goto invalid_url;
proto = NULL;
devname = NULL;
devnamelen = 0;
if (i == 4 && !strncasecmp(pkgname, "tftp", i)) {
devname = "net0";
devnamelen = 4;
proto = &tftp_fsops;
local = 0;
} else if (i == 4 && !strncasecmp(pkgname, "file", i)) {
currdev = getenv("currdev");
if (currdev != NULL && strcmp(currdev, "pxe0:") == 0) {
devname = "pxe0";
proto = NULL;
#ifdef HOSTPROG
} else if (currdev != NULL && strcmp(currdev, "host0:") == 0) {
extern struct fs_ops host_fsops;
local = 1;
devname = "host0";
proto = &host_fsops;
if (*s == '/') { /* file:/// */
if (devname == NULL)
devname = currdev;
if (devname == NULL)
devname = "disk1";
} else { /* file://devname[:fstype]/ */
devname = s;
e = strchr(devname, '/');
if (!e)
goto invalid_url;
devnamelen = e - devname;
s = e; /* consume devname */
}
if ((e = strchr(devname, ':')) != NULL) {
/* could be :fstype */
devnamelen = e - devname;
switch (e[1]) {
case '\0': /* just currdev */
break;
case 'd':
proto = &dosfs_fsops;
break;
#ifdef HOSTPROG
case 'h':
{
extern struct fs_ops host_fsops;
proto = &host_fsops;
}
break;
#endif
} else {
devname = "disk1";
case 'u':
proto = &ufs_fsops;
break;
}
}
if (proto == NULL && strncmp(devname, "disk", 4) == 0) {
proto = &dosfs_fsops;
}
local = 1;
} else
}
if (devname == NULL)
goto invalid_url;
s += 3;
if (*s == '\0')
goto invalid_url;
if (devnamelen == 0) {
/* default is currdev which ends with ':' */
devnamelen = strlen(devname);
if (devname[devnamelen - 1] == ':')
devnamelen--;
}
if (*s != '/' ) {
if (local)
@ -252,11 +294,12 @@ install(char *pkgname)
} else
pkgname = s;
if (strlen(devname) + strlen(pkgname) + 2 > sizeof(buf)) {
i = snprintf(buf, sizeof(buf), "%.*s:%s",
(int) devnamelen, devname, pkgname);
if (i >= (int) sizeof(buf)) {
command_errmsg = "package name too long";
return (CMD_ERROR);
}
sprintf(buf, "%s:%s", devname, pkgname);
setenv("install_package", buf, 1);
error = pkgfs_init(buf, proto);