diff options
| author |   millert <millert@openbsd.org> | 2001-08-19 18:30:38 +0000 |
|---|---|---|
| committer | millert <millert@openbsd.org> | 2001-08-19 18:30:38 +0000 |
| commit | 610cf93a59fe06efe097d05bc8d4310874ff34d4 (patch) | |
| tree | 951a7c43893643ebe518eba1e9afffa08be01ca8 /usr.sbin/vipw | |
| parent | $%&@#! (diff) | |
| download | wireguard-openbsd-610cf93a59fe06efe097d05bc8d4310874ff34d4.tar.xz wireguard-openbsd-610cf93a59fe06efe097d05bc8d4310874ff34d4.zip | |
Better file change detection:
o when copying to temp file set utimes on temp file equal to original
o use st_mtimespec instead of st_mtime for better granularity
Diffstat (limited to 'usr.sbin/vipw')
| -rw-r--r-- | usr.sbin/vipw/vipw.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/usr.sbin/vipw/vipw.c b/usr.sbin/vipw/vipw.c index 6a2d07b228a..9d32fa659dc 100644 --- a/usr.sbin/vipw/vipw.c +++ b/usr.sbin/vipw/vipw.c @@ -43,7 +43,7 @@ static char copyright[] = static char sccsid[] = "@(#)vipw.c 8.3 (Berkeley) 4/2/94"; #endif /* not lint */ -#include <sys/types.h> +#include <sys/time.h> #include <sys/stat.h> #include <err.h> @@ -96,7 +96,7 @@ main(argc, argv) pw_edit(0, NULL); if (stat(_PATH_MASTERPASSWD_LOCK, &end)) pw_error(_PATH_MASTERPASSWD_LOCK, 1, 1); - if (begin.st_mtime == end.st_mtime && + if (!timespeccmp(&begin.st_mtimespec, &end.st_mtimespec, -) && begin.st_size == end.st_size) { warnx("no changes made"); pw_error((char *)NULL, 0, 0); @@ -114,19 +114,28 @@ copyfile(from, to) { int nr, nw, off; char buf[8*1024]; + struct stat sb; + struct timeval tv[2]; + if (fstat(from, &sb) == -1) + pw_error(_PATH_MASTERPASSWD, 1, 1); while ((nr = read(from, buf, sizeof(buf))) > 0) for (off = 0; off < nr; nr -= nw, off += nw) if ((nw = write(to, buf + off, nr)) < 0) pw_error(_PATH_MASTERPASSWD_LOCK, 1, 1); if (nr < 0) pw_error(_PATH_MASTERPASSWD, 1, 1); + + TIMESPEC_TO_TIMEVAL(&tv[0], &sb.st_atimespec); + TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec); + (void) futimes(to, tv); } void usage() { + extern char *__progname; - (void)fprintf(stderr, "usage: vipw\n"); + (void)fprintf(stderr, "usage: %s\n", __progname); exit(1); } |