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Pull utime() Call into Helper

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This commit is contained in:
W. Felix Handte 2021-08-04 14:49:00 -04:00
parent ead41bcb4e
commit a719edbbc3
2 changed files with 32 additions and 19 deletions
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43
programs/util.c
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@ -159,6 +159,29 @@ int UTIL_chmod(char const* filename, const stat_t* statbuf, mode_t permissions)
return chmod(filename, permissions);
}
/* set access and modification times */
int UTIL_utime(const char* filename, const stat_t *statbuf)
{
int ret;
/* We check that st_mtime is a macro here in order to give us confidence
* that struct stat has a struct timespec st_mtim member. We need this
* check because there are some platforms that claim to be POSIX 2008
* compliant but which do not have st_mtim... */
#if (PLATFORM_POSIX_VERSION >= 200809L) && defined(st_mtime)
/* (atime, mtime) */
struct timespec timebuf[2] = { {0, UTIME_NOW} };
timebuf[1] = statbuf->st_mtim;
ret = utimensat(AT_FDCWD, filename, timebuf, 0);
#else
struct utimbuf timebuf;
timebuf.actime = time(NULL);
timebuf.modtime = statbuf->st_mtime;
ret = utime(filename, &timebuf);
#endif
errno = 0;
return ret;
}
int UTIL_setFileStat(const char *filename, const stat_t *statbuf)
{
int res = 0;
@ -168,25 +191,7 @@ int UTIL_setFileStat(const char *filename, const stat_t *statbuf)
return -1;
/* set access and modification times */
/* We check that st_mtime is a macro here in order to give us confidence
* that struct stat has a struct timespec st_mtim member. We need this
* check because there are some platforms that claim to be POSIX 2008
* compliant but which do not have st_mtim... */
#if (PLATFORM_POSIX_VERSION >= 200809L) && defined(st_mtime)
{
/* (atime, mtime) */
struct timespec timebuf[2] = { {0, UTIME_NOW} };
timebuf[1] = statbuf->st_mtim;
res += utimensat(AT_FDCWD, filename, timebuf, 0);
}
#else
{
struct utimbuf timebuf;
timebuf.actime = time(NULL);
timebuf.modtime = statbuf->st_mtime;
res += utime(filename, &timebuf);
}
#endif
res += UTIL_utime(filename, statbuf);
#if !defined(_WIN32)
res += chown(filename, statbuf->st_uid, statbuf->st_gid); /* Copy ownership */

8
programs/util.h
View File

@ -136,6 +136,14 @@ int UTIL_stat(const char* filename, stat_t* statbuf);
*/
int UTIL_setFileStat(const char* filename, const stat_t* statbuf);
/**
* Set atime to now and mtime to the st_mtim in statbuf.
*
* Directly wraps utime() or utimensat(). Returns -1 on error.
* Does not validate filename is valid.
*/
int UTIL_utime(const char* filename, const stat_t *statbuf);
/*
* These helpers operate on a pre-populated stat_t, i.e., the result of
* calling one of the above functions.