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commit 4e7a824f6b34dbe0dd2e2a3870891130b937f327
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Author: Felix Janda <felix.janda@posteo.de>
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Date: Thu Sep 8 10:22:28 2016 +1000
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libxfs/linux.c: Replace use of ustat by stat
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ustat has been used to check whether a device file is mounted.
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The function is deprecated and not supported by uclibc and musl.
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Now do the check using the *mntent functions.
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Based on patch by Natanael Copa <ncopa@alpinelinux.org>.
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Signed-off-by: Felix Janda <felix.janda@posteo.de>
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Reviewed-by: Eric Sandeen <sandeen@redhat.com>
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Signed-off-by: Dave Chinner <david@fromorbit.com>
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diff --git a/libxfs/linux.c b/libxfs/linux.c
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index c9f2baf..44bc1f9 100644
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--- a/libxfs/linux.c
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+++ b/libxfs/linux.c
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@@ -16,11 +16,8 @@
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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-#define ustat __kernel_ustat
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#include <mntent.h>
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#include <sys/stat.h>
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-#undef ustat
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-#include <sys/ustat.h>
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#include <sys/mount.h>
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#include <sys/ioctl.h>
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#include <sys/sysinfo.h>
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@@ -51,9 +48,10 @@ static int max_block_alignment;
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int
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platform_check_ismounted(char *name, char *block, struct stat64 *s, int verbose)
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{
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- /* Pad ust; pre-2.6.28 linux copies out too much in 32bit compat mode */
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- struct ustat ust[2];
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- struct stat64 st;
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+ FILE *f;
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+ struct stat64 st, mst;
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+ struct mntent *mnt;
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+ char mounts[MAXPATHLEN];
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if (!s) {
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if (stat64(block, &st) < 0)
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@@ -63,14 +61,27 @@ platform_check_ismounted(char *name, char *block, struct stat64 *s, int verbose)
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s = &st;
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}
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- if (ustat(s->st_rdev, ust) >= 0) {
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+ strcpy(mounts, (!access(PROC_MOUNTED, R_OK)) ? PROC_MOUNTED : MOUNTED);
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+ if ((f = setmntent(mounts, "r")) == NULL) {
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+ fprintf(stderr,
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+ _("%s: %s possibly contains a mounted filesystem\n"),
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+ progname, name);
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+ return 1;
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+ }
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+ while ((mnt = getmntent(f)) != NULL) {
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+ if (stat64(mnt->mnt_dir, &mst) < 0)
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+ continue;
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+ if (mst.st_dev != s->st_rdev)
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+ continue;
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+
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if (verbose)
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fprintf(stderr,
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_("%s: %s contains a mounted filesystem\n"),
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progname, name);
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- return 1;
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+ break;
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}
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- return 0;
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+ endmntent(f);
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+ return mnt != NULL;
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}
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int
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