diff options
Diffstat (limited to 'lockfile.c')
| -rw-r--r-- | lockfile.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/lockfile.c b/lockfile.c index 4023797b00..8589155532 100644 --- a/lockfile.c +++ b/lockfile.c @@ -121,15 +121,17 @@ static char *resolve_symlink(char *p, size_t s) } -static int lock_file(struct lock_file *lk, const char *path) +static int lock_file(struct lock_file *lk, const char *path, int flags) { - if (strlen(path) >= sizeof(lk->filename)) return -1; + if (strlen(path) >= sizeof(lk->filename)) + return -1; strcpy(lk->filename, path); /* * subtract 5 from size to make sure there's room for adding * ".lock" for the lock file name */ - resolve_symlink(lk->filename, sizeof(lk->filename)-5); + if (!(flags & LOCK_NODEREF)) + resolve_symlink(lk->filename, sizeof(lk->filename)-5); strcat(lk->filename, ".lock"); lk->fd = open(lk->filename, O_RDWR | O_CREAT | O_EXCL, 0666); if (0 <= lk->fd) { @@ -138,6 +140,7 @@ static int lock_file(struct lock_file *lk, const char *path) signal(SIGHUP, remove_lock_file_on_signal); signal(SIGTERM, remove_lock_file_on_signal); signal(SIGQUIT, remove_lock_file_on_signal); + signal(SIGPIPE, remove_lock_file_on_signal); atexit(remove_lock_file); } lk->owner = getpid(); @@ -155,21 +158,21 @@ static int lock_file(struct lock_file *lk, const char *path) return lk->fd; } -int hold_lock_file_for_update(struct lock_file *lk, const char *path, int die_on_error) +int hold_lock_file_for_update(struct lock_file *lk, const char *path, int flags) { - int fd = lock_file(lk, path); - if (fd < 0 && die_on_error) + 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)); return fd; } -int hold_lock_file_for_append(struct lock_file *lk, const char *path, int die_on_error) +int hold_lock_file_for_append(struct lock_file *lk, const char *path, int flags) { int fd, orig_fd; - fd = lock_file(lk, path); + fd = lock_file(lk, path, flags); if (fd < 0) { - if (die_on_error) + if (flags & LOCK_DIE_ON_ERROR) die("unable to create '%s.lock': %s", path, strerror(errno)); return fd; } @@ -177,13 +180,13 @@ int hold_lock_file_for_append(struct lock_file *lk, const char *path, int die_on orig_fd = open(path, O_RDONLY); if (orig_fd < 0) { if (errno != ENOENT) { - if (die_on_error) + if (flags & LOCK_DIE_ON_ERROR) die("cannot open '%s' for copying", path); close(fd); return error("cannot open '%s' for copying", path); } } else if (copy_fd(orig_fd, fd)) { - if (die_on_error) + if (flags & LOCK_DIE_ON_ERROR) exit(128); close(fd); return -1; @@ -215,7 +218,10 @@ int commit_lock_file(struct lock_file *lk) int hold_locked_index(struct lock_file *lk, int die_on_error) { - return hold_lock_file_for_update(lk, get_index_file(), die_on_error); + return hold_lock_file_for_update(lk, get_index_file(), + die_on_error + ? LOCK_DIE_ON_ERROR + : 0); } void set_alternate_index_output(const char *name) |