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-rw-r--r--lockfile.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/lockfile.c b/lockfile.c
index 8589155..8e556ff 100644
--- a/lockfile.c
+++ b/lockfile.c
@@ -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;
}