155 lines
4.4 KiB
C
155 lines
4.4 KiB
C
/* Helpers for utimes/utimens conversions.
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Copyright (C) 2015-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <hurd/hurd_types.h>
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#include <stddef.h>
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#include <sys/time.h>
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/* Initializes atime/mtime timespec structures from an array of timeval. */
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static inline void
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utime_ts_from_tval (const struct timeval tvp[2],
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struct timespec *atime, struct timespec *mtime)
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{
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if (tvp == NULL)
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{
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/* Setting the number of nanoseconds to UTIME_NOW tells the
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underlying filesystems to use the current time. */
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atime->tv_sec = 0;
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atime->tv_nsec = UTIME_NOW;
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mtime->tv_sec = 0;
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mtime->tv_nsec = UTIME_NOW;
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}
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else
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{
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TIMEVAL_TO_TIMESPEC (&tvp[0], atime);
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TIMEVAL_TO_TIMESPEC (&tvp[1], mtime);
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}
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}
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/* Initializes atime/mtime time_value_t structures from an array of timeval. */
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static inline void
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utime_tvalue_from_tval (const struct timeval tvp[2],
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time_value_t *atime, time_value_t *mtime)
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{
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if (tvp == NULL)
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/* Setting the number of microseconds to `-1' tells the
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underlying filesystems to use the current time. */
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atime->microseconds = mtime->microseconds = -1;
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else
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{
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atime->seconds = tvp[0].tv_sec;
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atime->microseconds = tvp[0].tv_usec;
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mtime->seconds = tvp[1].tv_sec;
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mtime->microseconds = tvp[1].tv_usec;
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}
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}
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/* Changes the access time of the file behind PORT using a timeval array. */
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static inline error_t
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hurd_futimes (const file_t port, const struct timeval tvp[2])
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{
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error_t err;
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struct timespec atime, mtime;
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utime_ts_from_tval (tvp, &atime, &mtime);
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err = __file_utimens (port, atime, mtime);
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if (err == MIG_BAD_ID || err == EOPNOTSUPP)
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{
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time_value_t atim, mtim;
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utime_tvalue_from_tval (tvp, &atim, &mtim);
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err = __file_utimes (port, atim, mtim);
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}
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return err;
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}
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/* Initializes atime/mtime timespec structures from an array of timespec. */
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static inline void
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utime_ts_from_tspec (const struct timespec tsp[2],
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struct timespec *atime, struct timespec *mtime)
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{
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if (tsp == NULL)
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{
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/* Setting the number of nanoseconds to UTIME_NOW tells the
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underlying filesystems to use the current time. */
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atime->tv_sec = 0;
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atime->tv_nsec = UTIME_NOW;
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mtime->tv_sec = 0;
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mtime->tv_nsec = UTIME_NOW;
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}
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else
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{
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*atime = tsp[0];
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*mtime = tsp[1];
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}
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}
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/* Initializes atime/mtime time_value_t structures from an array of timespec. */
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static inline void
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utime_tvalue_from_tspec (const struct timespec tsp[2],
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time_value_t *atime, time_value_t *mtime)
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{
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if (tsp == NULL)
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/* Setting the number of microseconds to `-1' tells the
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underlying filesystems to use the current time. */
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atime->microseconds = mtime->microseconds = -1;
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else
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{
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if (tsp[0].tv_nsec == UTIME_NOW)
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atime->microseconds = -1;
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else if (tsp[0].tv_nsec == UTIME_OMIT)
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atime->microseconds = -2;
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else
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TIMESPEC_TO_TIME_VALUE (atime, &(tsp[0]));
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if (tsp[1].tv_nsec == UTIME_NOW)
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mtime->microseconds = -1;
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else if (tsp[1].tv_nsec == UTIME_OMIT)
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mtime->microseconds = -2;
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else
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TIMESPEC_TO_TIME_VALUE (mtime, &(tsp[1]));
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}
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}
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/* Changes the access time of the file behind PORT using a timespec array. */
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static inline error_t
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hurd_futimens (const file_t port, const struct timespec tsp[2])
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{
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error_t err;
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struct timespec atime, mtime;
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utime_ts_from_tspec (tsp, &atime, &mtime);
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err = __file_utimens (port, atime, mtime);
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if (err == MIG_BAD_ID || err == EOPNOTSUPP)
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{
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time_value_t atim, mtim;
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utime_tvalue_from_tspec (tsp, &atim, &mtim);
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err = __file_utimes (port, atim, mtim);
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}
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return err;
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}
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