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use new wrapper write_file() for simple file writing

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This fixes common problems in these code about error handling,
forgetting to close the file handle after fprintf() fails, or not
printing out the error string..

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2014-11-30 15:24:46 +07:00 committed by Junio C Hamano
parent 316e53e68c
commit 91aacda85a
5 changed files with 8 additions and 31 deletions
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4
builtin/branch.c
View file

@ -764,7 +764,6 @@ static const char edit_description[] = "BRANCH_DESCRIPTION";
static int edit_branch_description(const char *branch_name)
{
FILE *fp;
int status;
struct strbuf buf = STRBUF_INIT;
struct strbuf name = STRBUF_INIT;
@ -777,8 +776,7 @@ static int edit_branch_description(const char *branch_name)
" %s\n"
"Lines starting with '%c' will be stripped.\n",
branch_name, comment_line_char);
fp = fopen(git_path(edit_description), "w");
if ((fwrite(buf.buf, 1, buf.len, fp) < buf.len) || fclose(fp)) {
if (write_file(git_path(edit_description), 0, "%s", buf.buf)) {
strbuf_release(&buf);
return error(_("could not write branch description template: %s"),
strerror(errno));

7
builtin/init-db.c
View file

@ -342,7 +342,6 @@ int set_git_dir_init(const char *git_dir, const char *real_git_dir,
static void separate_git_dir(const char *git_dir)
{
struct stat st;
FILE *fp;
if (!stat(git_link, &st)) {
const char *src;
@ -358,11 +357,7 @@ static void separate_git_dir(const char *git_dir)
die_errno(_("unable to move %s to %s"), src, git_dir);
}
fp = fopen(git_link, "w");
if (!fp)
die(_("Could not create git link %s"), git_link);
fprintf(fp, "gitdir: %s\n", git_dir);
fclose(fp);
write_file(git_link, 1, "gitdir: %s\n", git_dir);
}
int init_db(const char *template_dir, unsigned int flags)

11
daemon.c
View file

@ -1070,15 +1070,6 @@ static struct credentials *prepare_credentials(const char *user_name,
}
#endif
static void store_pid(const char *path)
{
FILE *f = fopen(path, "w");
if (!f)
die_errno("cannot open pid file '%s'", path);
if (fprintf(f, "%"PRIuMAX"\n", (uintmax_t) getpid()) < 0 || fclose(f) != 0)
die_errno("failed to write pid file '%s'", path);
}
static int serve(struct string_list *listen_addr, int listen_port,
struct credentials *cred)
{
@ -1289,7 +1280,7 @@ int main(int argc, char **argv)
sanitize_stdfds();
if (pid_file)
store_pid(pid_file);
write_file(pid_file, 1, "%"PRIuMAX"\n", (uintmax_t) getpid());
/* prepare argv for serving-processes */
cld_argv = xmalloc(sizeof (char *) * (argc + 2));

9
submodule.c
View file

@ -1102,16 +1102,11 @@ void connect_work_tree_and_git_dir(const char *work_tree, const char *git_dir)
struct strbuf file_name = STRBUF_INIT;
struct strbuf rel_path = STRBUF_INIT;
const char *real_work_tree = xstrdup(real_path(work_tree));
FILE *fp;
/* Update gitfile */
strbuf_addf(&file_name, "%s/.git", work_tree);
fp = fopen(file_name.buf, "w");
if (!fp)
die(_("Could not create git link %s"), file_name.buf);
fprintf(fp, "gitdir: %s\n", relative_path(git_dir, real_work_tree,
&rel_path));
fclose(fp);
write_file(file_name.buf, 1, "gitdir: %s\n",
relative_path(git_dir, real_work_tree, &rel_path));
/* Update core.worktree setting */
strbuf_reset(&file_name);

8
transport.c
View file

@ -283,7 +283,6 @@ static int write_one_ref(const char *name, const unsigned char *sha1,
{
struct strbuf *buf = data;
int len = buf->len;
FILE *f;
/* when called via for_each_ref(), flags is non-zero */
if (flags && !starts_with(name, "refs/heads/") &&
@ -292,10 +291,9 @@ static int write_one_ref(const char *name, const unsigned char *sha1,
strbuf_addstr(buf, name);
if (safe_create_leading_directories(buf->buf) ||
!(f = fopen(buf->buf, "w")) ||
fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
fclose(f))
return error("problems writing temporary file %s", buf->buf);
write_file(buf->buf, 0, "%s\n", sha1_to_hex(sha1)))
return error("problems writing temporary file %s: %s",
buf->buf, strerror(errno));
strbuf_setlen(buf, len);
return 0;
}