diff options
Diffstat (limited to 'lockfile.c')
| -rw-r--r-- | lockfile.c | 24 |
1 files changed, 18 insertions, 6 deletions
@@ -2,6 +2,7 @@ * Copyright (c) 2005, Junio C Hamano */ #include "cache.h" +#include "sigchain.h" static struct lock_file *lock_file_list; static const char *alternate_index_output; @@ -24,7 +25,7 @@ static void remove_lock_file(void) static void remove_lock_file_on_signal(int signo) { remove_lock_file(); - signal(signo, SIG_DFL); + sigchain_pop(signo); raise(signo); } @@ -136,10 +137,7 @@ static int lock_file(struct lock_file *lk, const char *path, int flags) lk->fd = open(lk->filename, O_RDWR | O_CREAT | O_EXCL, 0666); if (0 <= lk->fd) { if (!lock_file_list) { - signal(SIGINT, remove_lock_file_on_signal); - signal(SIGHUP, remove_lock_file_on_signal); - signal(SIGTERM, remove_lock_file_on_signal); - signal(SIGQUIT, remove_lock_file_on_signal); + sigchain_push_common(remove_lock_file_on_signal); atexit(remove_lock_file); } lk->owner = getpid(); @@ -157,11 +155,25 @@ 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; } |