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More friendly message when locking the index fails.

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Just saying that index.lock exists doesn't tell the user _what_ to do
to fix the problem. We should give an indication that it's normally
safe to delete index.lock after making sure git isn't running here.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Matthieu Moy
2009-02-19 13:54:18 +01:00
committed by Junio C Hamano
parent b452cc16d8
commit e43a6fd3e9
3 changed files with 17 additions and 3 deletions
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16
lockfile.c
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@ -158,11 +158,25 @@ 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)
{
if (errno == EEXIST) {
die("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));
}
}
int hold_lock_file_for_update(struct lock_file *lk, const char *path, int flags)
{
int fd = lock_file(lk, path, flags);
if (fd < 0 && (flags & LOCK_DIE_ON_ERROR))
die("unable to create '%s.lock': %s", path, strerror(errno));
unable_to_lock_index_die(path, errno);
return fd;
}