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lvm-file: wrapper to read ctim from stat

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When available use nanosecond stat info.

If commands are running closely enough after config update,
the .cache file from persistent filter could have been ignored.

This happens sometimes during i.e. synthetic test suite run.
This commit is contained in:
Zdenek Kabelac 2015-03-18 10:54:08 +01:00
parent 17583f1b59
commit 6606b1bff3
2 changed files with 22 additions and 0 deletions
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11
lib/misc/lvm-file.c
View File

@ -21,6 +21,7 @@
#include <sys/file.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/time.h>
/*
* Creates a temporary filename, and opens a descriptor to the
@ -273,3 +274,13 @@ int lvm_fclose(FILE *fp, const char *filename)
return EOF;
}
void lvm_stat_ctim(struct timespec *ctim, const struct stat *buf)
{
#ifdef HAVE_STAT_ST_CTIM
*ctim = buf->st_ctim;
#else
ctim->tv_sec = buf->st_ctime;
ctim->tv_nsec = 0;
#endif
}

11
lib/misc/lvm-file.h
View File

@ -62,4 +62,15 @@ void fcntl_unlock_file(int lockfd);
*/
int lvm_fclose(FILE *fp, const char *filename);
/*
* Convert stat->st_ctim status of last change in nanoseconds
* uses st_ctime when not available.
*/
void lvm_stat_ctim(struct timespec *ts, const struct stat *buf);
/* Inspired by <sys/time.h> timercmp() macro for timeval */
#define timespeccmp(tsp, usp, cmp)\
(((tsp)->tv_sec == (usp)->tv_sec) ?\
((tsp)->tv_nsec cmp (usp)->tv_nsec) :\
((tsp)->tv_sec cmp (usp)->tv_sec))
#endif