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34 lines
683 B
34 lines
683 B
4 months ago
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/* fsync.c - Synchronize a file's in-core state with storage device.
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*
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* Copyright 2015 Ranjan Kumar <ranjankumar.bth@gmail.comi>
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*
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* No Standard.
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USE_FSYNC(NEWTOY(fsync, "<1d", TOYFLAG_BIN))
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config FSYNC
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bool "fsync"
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default y
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help
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usage: fsync [-d] [FILE...]
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Synchronize a file's in-core state with storage device.
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-d Avoid syncing metadata
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*/
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#define FOR_fsync
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#include "toys.h"
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static void do_fsync(int fd, char *name)
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{
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if (((toys.optflags & FLAG_d) ? fdatasync(fd) : fsync(fd)))
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perror_msg("can't sync '%s'", name);
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}
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void fsync_main(void)
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{
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loopfiles_rw(toys.optargs, O_RDONLY|O_NOATIME|O_NOCTTY|O_CLOEXEC|WARN_ONLY,
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0, do_fsync);
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}
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