diff options
| -rw-r--r-- | coreutils/fsync.c | 30 | ||||
| -rw-r--r-- | coreutils/sync.c | 22 |
2 files changed, 25 insertions, 27 deletions
diff --git a/coreutils/fsync.c b/coreutils/fsync.c index c7cba9f..216cbcf 100644 --- a/coreutils/fsync.c +++ b/coreutils/fsync.c @@ -12,6 +12,7 @@ //config: help //config: fsync is used to flush file-related cached blocks to disk. +// APPLET_NOFORK:name main location suid_type help //applet:IF_FSYNC(APPLET_NOFORK(fsync, fsync, BB_DIR_BIN, BB_SUID_DROP, fsync)) //kbuild:lib-$(CONFIG_FSYNC) += fsync.o @@ -19,20 +20,17 @@ //usage:#define fsync_trivial_usage //usage: "[-d] FILE..." //usage:#define fsync_full_usage "\n\n" -//usage: "Write files' buffered blocks to disk\n" +//usage: "Write all buffered blocks in FILEs to disk\n" //usage: "\n -d Avoid syncing metadata" #include "libbb.h" -#ifndef O_NOATIME -# define O_NOATIME 0 -#endif /* This is a NOFORK applet. Be very careful! */ int fsync_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int fsync_main(int argc UNUSED_PARAM, char **argv) { - int status; + int ret; int opts; opts = getopt32(argv, "d"); /* fdatasync */ @@ -41,20 +39,24 @@ int fsync_main(int argc UNUSED_PARAM, char **argv) bb_show_usage(); } - status = EXIT_SUCCESS; + ret = EXIT_SUCCESS; do { - int fd = open_or_warn(*argv, O_NOATIME | O_NOCTTY | O_RDONLY); + /* GNU "sync FILE" uses O_NONBLOCK open */ + int fd = open_or_warn(*argv, /*O_NOATIME |*/ O_NOCTTY | O_RDONLY | O_NONBLOCK); + /* open(NOATIME) can only be used by owner or root, don't use NOATIME here */ - if (fd == -1) { - status = EXIT_FAILURE; - continue; + if (fd < 0) { + ret = EXIT_FAILURE; + goto next; } - if ((opts ? fdatasync(fd) : fsync(fd))) { - //status = EXIT_FAILURE; - do we want this? + if ((opts ? fdatasync(fd) : fsync(fd)) != 0) { bb_simple_perror_msg(*argv); + ret = EXIT_FAILURE; } close(fd); - } while (*++argv); + next: + argv++; + } while (*argv); - return status; + return ret; } diff --git a/coreutils/sync.c b/coreutils/sync.c index b93476a..e60e553 100644 --- a/coreutils/sync.c +++ b/coreutils/sync.c @@ -20,6 +20,7 @@ //config: sync -d FILE... executes fdatasync() on each FILE. //config: sync -f FILE... executes syncfs() on each FILE. +// APPLET_NOFORK:name main location suid_type help //applet:IF_SYNC(APPLET_NOFORK(sync, sync, BB_DIR_BIN, BB_SUID_DROP, sync)) //kbuild:lib-$(CONFIG_SYNC) += sync.o @@ -52,7 +53,7 @@ int sync_main(int argc UNUSED_PARAM, char **argv IF_NOT_DESKTOP(UNUSED_PARAM)) return EXIT_SUCCESS; #else unsigned opts; - int ret = EXIT_SUCCESS; + int ret; enum { OPT_DATASYNC = (1 << 0), @@ -66,35 +67,30 @@ int sync_main(int argc UNUSED_PARAM, char **argv IF_NOT_DESKTOP(UNUSED_PARAM)) if (!argv[0]) sync(); + ret = EXIT_SUCCESS; while (*argv) { - int fd = open_or_warn(*argv, O_RDONLY); + /* GNU "sync FILE" uses O_NONBLOCK open */ + int fd = open_or_warn(*argv, /*O_NOATIME |*/ O_NOCTTY | O_RDONLY | O_NONBLOCK); + /* open(NOATIME) can only be used by owner or root, don't use NOATIME here */ if (fd < 0) { ret = EXIT_FAILURE; goto next; } - if (opts & OPT_DATASYNC) { - if (fdatasync(fd)) - goto err; - goto do_close; - } if (opts & OPT_SYNCFS) { /* * syncfs is documented to only fail with EBADF, * which can't happen here. So, no error checks. */ syncfs(fd); - goto do_close; - } - if (fsync(fd)) { - err: + } else + if (((opts & OPT_DATASYNC) ? fdatasync(fd) : fsync(fd)) != 0) { bb_simple_perror_msg(*argv); ret = EXIT_FAILURE; } - do_close: close(fd); next: - ++argv; + argv++; } return ret; |