| -rw-r--r-- | cache.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -60,58 +60,61 @@ static int open_slot(struct cache_slot *slot) bufkeylen = bufz - slot->buf; slot->match = bufkeylen == slot->keylen && !memcmp(slot->key, slot->buf, bufkeylen + 1); return 0; } /* Close the active cache slot */ static int close_slot(struct cache_slot *slot) { int err = 0; if (slot->cache_fd > 0) { if (close(slot->cache_fd)) err = errno; else slot->cache_fd = -1; } return err; } /* Print the content of the active cache slot (but skip the key). */ static int print_slot(struct cache_slot *slot) { - ssize_t i; + ssize_t i, j; i = lseek(slot->cache_fd, slot->keylen + 1, SEEK_SET); if (i != slot->keylen + 1) return errno; - while((i = xread(slot->cache_fd, slot->buf, sizeof(slot->buf))) > 0) - i = xwrite(STDOUT_FILENO, slot->buf, i); + do { + i = j = xread(slot->cache_fd, slot->buf, sizeof(slot->buf)); + if (i > 0) + j = xwrite(STDOUT_FILENO, slot->buf, i); + } while (i > 0 && j == i); - if (i < 0) + if (i < 0 || j != i) return errno; else return 0; } /* Check if the slot has expired */ static int is_expired(struct cache_slot *slot) { if (slot->ttl < 0) return 0; else return slot->cache_st.st_mtime + slot->ttl*60 < time(NULL); } /* Check if the slot has been modified since we opened it. * NB: If stat() fails, we pretend the file is modified. */ static int is_modified(struct cache_slot *slot) { struct stat st; if (stat(slot->cache_name, &st)) return 1; return (st.st_ino != slot->cache_st.st_ino || |