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authorKarel Zak2018-06-01 12:29:14 +0200
committerKarel Zak2018-06-01 12:29:14 +0200
commit8d6de22499827c3280ff07875fc0744b3a454516 (patch)
treeec15fe81d9f58c68a465c2e4c2680370358ad246 /libmount/src
parentlibmount: improve MS_REC usage (diff)
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libmount: don't use MS_MGC_VAL magic in mount(2) syscall
Specifying MS_MGC_VAL was required in kernel versions prior to 2.4, but since Linux 2.4 is no longer required and is ignored if specified The minimal kernel requirement for util-linux is Linux v2.6. Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'libmount/src')
-rw-r--r--libmount/src/context_mount.c2
-rw-r--r--libmount/src/context_umount.c2
-rw-r--r--libmount/src/libmount.h.in3
3 files changed, 3 insertions, 4 deletions
diff --git a/libmount/src/context_mount.c b/libmount/src/context_mount.c
index a8e84127c..6207bd814 100644
--- a/libmount/src/context_mount.c
+++ b/libmount/src/context_mount.c
@@ -764,8 +764,6 @@ static int do_mount(struct libmnt_context *cxt, const char *try_type)
}
type = try_type ? : mnt_fs_get_fstype(cxt->fs);
- if (!(flags & MS_MGC_MSK))
- flags |= MS_MGC_VAL;
if (try_type)
flags |= MS_SILENT;
diff --git a/libmount/src/context_umount.c b/libmount/src/context_umount.c
index 240ec3be6..81a650352 100644
--- a/libmount/src/context_umount.c
+++ b/libmount/src/context_umount.c
@@ -737,7 +737,7 @@ static int do_umount(struct libmnt_context *cxt)
-cxt->syscall_status));
rc = mount(src, mnt_fs_get_target(cxt->fs), NULL,
- MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
+ MS_REMOUNT | MS_RDONLY, NULL);
if (rc < 0) {
cxt->syscall_status = -errno;
DBG(CXT, ul_debugobj(cxt,
diff --git a/libmount/src/libmount.h.in b/libmount/src/libmount.h.in
index c61514b59..e12a90f07 100644
--- a/libmount/src/libmount.h.in
+++ b/libmount/src/libmount.h.in
@@ -938,7 +938,8 @@ extern int mnt_context_set_syscall_status(struct libmnt_context *cxt, int status
/*
- * Magic mount flag number. Had to be or-ed to the flag values.
+ * Magic mount flag number. Had to be or-ed to the flag values. Deprecated and
+ * no more used since libmount v2.33; required for Linux <= 2.4.
*/
#ifndef MS_MGC_VAL
#define MS_MGC_VAL 0xC0ED0000 /* magic flag number to indicate "new" flags */