diff options
| -rw-r--r-- | fs/btrfs/shutdown/fserror.c | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/fs/btrfs/shutdown/fserror.c b/fs/btrfs/shutdown/fserror.c index f06521c..3ac8a2f 100644 --- a/fs/btrfs/shutdown/fserror.c +++ b/fs/btrfs/shutdown/fserror.c @@ -9,26 +9,26 @@ int main(int argc, char *argv[]) { - int fd; - char buf[4096]; - ssize_t len; - struct fanotify_event_metadata *metadata; - struct fanotify_event_info_error *error_info; + int fd; + char buf[4096]; + ssize_t len; + struct fanotify_event_metadata *metadata; + struct fanotify_event_info_error *error_info; - if (argc < 2) { - fprintf(stderr, "Usage: %s <mount point>\n", argv[0]); - exit(EXIT_FAILURE); - } + if (argc < 2) { + fprintf(stderr, "Usage: %s <mount point>\n", argv[0]); + exit(EXIT_FAILURE); + } - /* + /* * Initialize 'fanotify' with the default value and `FAN_REPORT_FID`, which * will allow use to filter by `FAN_FS_ERROR` down the line. */ - fd = fanotify_init(FAN_CLASS_NOTIF | FAN_REPORT_FID, O_RDONLY); - if (fd < 0) { - perror("fanotify_init"); - exit(EXIT_FAILURE); - } + fd = fanotify_init(FAN_CLASS_NOTIF | FAN_REPORT_FID, O_RDONLY); + if (fd < 0) { + perror("fanotify_init"); + exit(EXIT_FAILURE); + } /* * Add a 'fanotify' mark to monitor all files from the filesystem pointed by @@ -36,28 +36,28 @@ int main(int argc, char *argv[]) * thing that makes this program to need root permission as documented in * the manpage: "Use of this flag requires the CAP_SYS_ADMIN capability". */ - if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_FILESYSTEM, - FAN_FS_ERROR, AT_FDCWD, argv[1]) < 0) { - perror("fanotify_mark"); - exit(EXIT_FAILURE); - } + if (fanotify_mark(fd, FAN_MARK_ADD | FAN_MARK_FILESYSTEM, FAN_FS_ERROR, AT_FDCWD, argv[1]) < 0) { + perror("fanotify_mark"); + exit(EXIT_FAILURE); + } - printf("Listening for filesystem errors on '%s'\n", argv[1]); + printf("Listening for filesystem errors on '%s'\n", argv[1]); - // Event Loop - while ((len = read(fd, buf, sizeof(buf))) > 0) { - metadata = (struct fanotify_event_metadata *)buf; + // Event Loop + while ((len = read(fd, buf, sizeof(buf))) > 0) { + metadata = (struct fanotify_event_metadata *)buf; - while (FAN_EVENT_OK(metadata, len)) { + while (FAN_EVENT_OK(metadata, len)) { /* * We only care about filesystem errors, which is the only thing we * passed to 'fanotify_mark'. That being said, just to be sure, * let's filter this out. */ - if (metadata->mask & FAN_FS_ERROR) { - // fancy... - error_info = (struct fanotify_event_info_error *) - ((char *)metadata + metadata->event_len - sizeof(*error_info)); + if (metadata->mask & FAN_FS_ERROR) { + // fancy... + error_info = + (struct fanotify_event_info_error *)((char *)metadata + metadata->event_len - + sizeof(*error_info)); if (error_info->error == ESHUTDOWN) { printf("Shutdown detected!\n"); @@ -65,13 +65,13 @@ int main(int argc, char *argv[]) } else { printf("Filesystem error detected with code: %d\n", error_info->error); } - } + } - metadata = FAN_EVENT_NEXT(metadata, len); - } - } + metadata = FAN_EVENT_NEXT(metadata, len); + } + } - done: - close(fd); - return 0; +done: + close(fd); + return 0; } |