1 /* fsync.c - Synchronize a file's in-core state with storage device. 2 * 3 * Copyright 2015 Ranjan Kumar <ranjankumar.bth (at) gmail.comi> 4 * 5 * No Standard. 6 7 USE_FSYNC(NEWTOY(fsync, "<1d", TOYFLAG_BIN)) 8 9 config FSYNC 10 bool "fsync" 11 default y 12 help 13 usage: fsync [-d] [FILE...] 14 15 Synchronize a file's in-core state with storage device. 16 17 -d Avoid syncing metadata. 18 */ 19 20 #define FOR_fsync 21 #include "toys.h" 22 23 static void do_fsync(int fd, char *name) 24 { 25 if (((toys.optflags & FLAG_d) ? fdatasync(fd) : fsync(fd))) 26 perror_msg("can't sync '%s'", name); 27 } 28 29 void fsync_main(void) 30 { 31 loopfiles_rw(toys.optargs, O_RDONLY|O_NOATIME|O_NOCTTY|O_CLOEXEC, 32 0, 0, do_fsync); 33 } 34
