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git branch -D: give a better error message when lockfile creation fails

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Previously the old error message just told the user that it was not
possible to delete the ref from the packed-refs file. Give instructions
on how to resolve the problem.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Miklos Vajna
2009-09-27 01:15:09 +02:00
committed by Shawn O. Pearce
parent 6bbfd1fa98
commit 1b018fd9be
3 changed files with 24 additions and 7 deletions
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26
lockfile.c
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@ -155,18 +155,32 @@ static int lock_file(struct lock_file *lk, const char *path, int flags)
return lk->fd;
}
NORETURN void unable_to_lock_index_die(const char *path, int err)
static char *unable_to_lock_message(const char *path, int err)
{
struct strbuf buf = STRBUF_INIT;
if (err == EEXIST) {
die("Unable to create '%s.lock': %s.\n\n"
strbuf_addf(&buf, "Unable to create '%s.lock': %s.\n\n"
"If no other git process is currently running, this probably means a\n"
"git process crashed in this repository earlier. Make sure no other git\n"
"process is running and remove the file manually to continue.",
path, strerror(err));
} else {
die("Unable to create '%s.lock': %s", path, strerror(err));
}
} else
strbuf_addf(&buf, "Unable to create '%s.lock': %s", path, strerror(err));
return strbuf_detach(&buf, NULL);
}
int unable_to_lock_error(const char *path, int err)
{
char *msg = unable_to_lock_message(path, err);
error("%s", msg);
free(msg);
return -1;
}
NORETURN void unable_to_lock_index_die(const char *path, int err)
{
die("%s", unable_to_lock_message(path, err));
}
int hold_lock_file_for_update(struct lock_file *lk, const char *path, int flags)