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| author | Kay Sievers <kay.sievers@vrfy.org> | 2008-11-21 05:02:02 +0100 |
|---|---|---|
| committer | Kay Sievers <kay.sievers@vrfy.org> | 2008-11-21 05:02:02 +0100 |
| commit | 405d2830431742ca156833edd1f868ede015c83b (patch) | |
| tree | 964ce7bcfa83d7b5e44bf684fea67627ab073ec2 /extras/volume_id | |
| parent | 2b22881cae4194e453766036300098fa19ccc1e6 (diff) | |
vol_id: if regular files are probed, use stat() for the size value
Diffstat (limited to 'extras/volume_id')
| -rw-r--r-- | extras/volume_id/vol_id.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/extras/volume_id/vol_id.c b/extras/volume_id/vol_id.c index a50560c097..889bd3483d 100644 --- a/extras/volume_id/vol_id.c +++ b/extras/volume_id/vol_id.c @@ -31,6 +31,7 @@ #include <grp.h> #include <getopt.h> #include <fcntl.h> +#include <sys/stat.h> #include <inttypes.h> #include <sys/ioctl.h> @@ -214,9 +215,17 @@ int main(int argc, char *argv[]) } if (size == 0) { - if (ioctl(fd, BLKGETSIZE64, &size) != 0) - size = 0; - info(udev_ctx, "BLKGETSIZE64=%" PRIu64 " (%" PRIu64 "GB)\n", size, size >> 30); + if (ioctl(fd, BLKGETSIZE64, &size) == 0) { + info(udev_ctx, "BLKGETSIZE64=%" PRIu64 " (%" PRIu64 "GB)\n", size, size >> 30); + } else { + struct stat statbuf; + + if (fstat(fd, &statbuf) == 0 && S_ISREG(statbuf.st_mode)) + size = statbuf.st_size; + else + size = 0; + info(udev_ctx, "stat=%" PRIu64 " (%" PRIu64 "GB)\n", size, size >> 30); + } } /* try to drop all privileges before reading disk content */ |