diff options
Diffstat (limited to 'bin')
| -rw-r--r-- | bin/rm/rm.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/bin/rm/rm.c b/bin/rm/rm.c index 3c2ba61..1f81885 100644 --- a/bin/rm/rm.c +++ b/bin/rm/rm.c @@ -408,7 +408,7 @@ rm_file(char **argv) int rm_overwrite(char *file, struct stat *sbp) { - struct stat sb; + struct stat sb, sb2; struct statfs fsb; off_t len; int bsize, fd, wlen; @@ -427,8 +427,15 @@ rm_overwrite(char *file, struct stat *sbp) file, sbp->st_ino); return (0); } - if ((fd = open(file, O_WRONLY, 0)) == -1) + if ((fd = open(file, O_WRONLY|O_NONBLOCK|O_NOFOLLOW, 0)) == -1) + goto err; + if (fstat(fd, &sb2)) goto err; + if (sb2.st_dev != sbp->st_dev || sb2.st_ino != sbp->st_ino || + !S_ISREG(sb2.st_mode)) { + errno = EPERM; + goto err; + } if (fstatfs(fd, &fsb) == -1) goto err; bsize = MAX(fsb.f_iosize, 1024); |
