diff options
| -rw-r--r-- | cache.c | 37 |
1 files changed, 14 insertions, 23 deletions
diff --git a/cache.c b/cache.c index 0901e6e..2c70be7 100644 --- a/cache.c +++ b/cache.c @@ -29,6 +29,7 @@ struct cache_slot { cache_fill_fn fn; int cache_fd; int lock_fd; + int stdout_fd; const char *cache_name; const char *lock_name; int match; @@ -197,6 +198,13 @@ static int unlock_slot(struct cache_slot *slot, int replace_old_slot) else err = unlink(slot->lock_name); + /* Restore stdout and close the temporary FD. */ + if (slot->stdout_fd >= 0) { + dup2(slot->stdout_fd, STDOUT_FILENO); + close(slot->stdout_fd); + slot->stdout_fd = -1; + } + if (err) return errno; @@ -208,42 +216,24 @@ static int unlock_slot(struct cache_slot *slot, int replace_old_slot) */ static int fill_slot(struct cache_slot *slot) { - int tmp; - /* Preserve stdout */ - tmp = dup(STDOUT_FILENO); - if (tmp == -1) + slot->stdout_fd = dup(STDOUT_FILENO); + if (slot->stdout_fd == -1) return errno; /* Redirect stdout to lockfile */ - if (dup2(slot->lock_fd, STDOUT_FILENO) == -1) { - close(tmp); + if (dup2(slot->lock_fd, STDOUT_FILENO) == -1) return errno; - } /* Generate cache content */ slot->fn(); /* Make sure any buffered data is flushed to the file */ - if (fflush(stdout)) { - close(tmp); + if (fflush(stdout)) return errno; - } /* update stat info */ - if (fstat(slot->lock_fd, &slot->cache_st)) { - close(tmp); - return errno; - } - - /* Restore stdout */ - if (dup2(tmp, STDOUT_FILENO) == -1) { - close(tmp); - return errno; - } - - /* Close the temporary filedescriptor */ - if (close(tmp)) + if (fstat(slot->lock_fd, &slot->cache_st)) return errno; return 0; @@ -393,6 +383,7 @@ int cache_process(int size, const char *path, const char *key, int ttl, strbuf_addstr(&lockname, ".lock"); slot.fn = fn; slot.ttl = ttl; + slot.stdout_fd = -1; slot.cache_name = filename.buf; slot.lock_name = lockname.buf; slot.key = key; |