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prepare_tempfile_object(): new function, extracted from create_tempfile()

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This makes the next step easier.

The old code used to use "path" to set the initial length of
tempfile->filename. This was not helpful because path was usually
relative whereas the value stored to filename will be absolute. So
just initialize the length to 0.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty 2015-08-10 11:47:42 +02:00 committed by Junio C Hamano
parent 1a9d15db25
commit 7eba6ce5c7
1 changed files with 13 additions and 7 deletions
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20
tempfile.c
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@ -85,11 +85,11 @@ static void remove_tempfiles_on_signal(int signo)
raise(signo);
}
/* Make sure errno contains a meaningful value on error */
int create_tempfile(struct tempfile *tempfile, const char *path)
/*
* Initialize *tempfile if necessary and add it to tempfile_list.
*/
static void prepare_tempfile_object(struct tempfile *tempfile)
{
size_t pathlen = strlen(path);
if (!tempfile_list) {
/* One-time initialization */
sigchain_push_common(remove_tempfiles_on_signal);
@ -97,21 +97,27 @@ int create_tempfile(struct tempfile *tempfile, const char *path)
}
if (tempfile->active)
die("BUG: create_tempfile called for active object");
die("BUG: prepare_tempfile_object called for active object");
if (!tempfile->on_list) {
/* Initialize *tempfile and add it to tempfile_list: */
tempfile->fd = -1;
tempfile->fp = NULL;
tempfile->active = 0;
tempfile->owner = 0;
strbuf_init(&tempfile->filename, pathlen);
strbuf_init(&tempfile->filename, 0);
tempfile->next = tempfile_list;
tempfile_list = tempfile;
tempfile->on_list = 1;
} else if (tempfile->filename.len) {
/* This shouldn't happen, but better safe than sorry. */
die("BUG: create_tempfile called for improperly-reset object");
die("BUG: prepare_tempfile_object called for improperly-reset object");
}
}
/* Make sure errno contains a meaningful value on error */
int create_tempfile(struct tempfile *tempfile, const char *path)
{
prepare_tempfile_object(tempfile);
strbuf_add_absolute_path(&tempfile->filename, path);
tempfile->fd = open(tempfile->filename.buf, O_RDWR | O_CREAT | O_EXCL, 0666);