X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fbasic%2Fmount-util.c;h=c85c47301ba0b6e136025d2c0d2aa4f74d60cae7;hb=0801458c689ba85fd27666f69e42818f87353bc2;hp=ff5893d3dbde979c45973f6f1c73cdf29cbbb74d;hpb=b96ed50e3493103d075ff2ce4c3fbad8f26b2e22;p=elogind.git
diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index ff5893d3d..c85c47301 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
@@ -19,21 +17,25 @@
along with systemd; If not, see .
***/
+#include
+#include
#include
#include
+#include
#include
+#include
#include "alloc-util.h"
#include "escape.h"
#include "fd-util.h"
#include "fileio.h"
+#include "hashmap.h"
#include "mount-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "set.h"
#include "stdio-util.h"
#include "string-util.h"
-#include "util.h"
static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id) {
char path[strlen("/proc/self/fdinfo/") + DECIMAL_STR_MAX(int)];
@@ -45,7 +47,7 @@ static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id
if ((flags & AT_EMPTY_PATH) && isempty(filename))
xsprintf(path, "/proc/self/fdinfo/%i", fd);
else {
- subfd = openat(fd, filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_PATH);
+ subfd = openat(fd, filename, O_CLOEXEC|O_PATH);
if (subfd < 0)
return -errno;
@@ -73,7 +75,6 @@ static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id
return safe_atoi(p, mnt_id);
}
-
int fd_is_mount_point(int fd, const char *filename, int flags) {
union file_handle_union h = FILE_HANDLE_INIT, h_parent = FILE_HANDLE_INIT;
int mount_id = -1, mount_id_parent = -1;
@@ -102,7 +103,7 @@ int fd_is_mount_point(int fd, const char *filename, int flags) {
*
* As last fallback we do traditional fstat() based st_dev
* comparisons. This is how things were traditionally done,
- * but unionfs breaks breaks this since it exposes file
+ * but unionfs breaks this since it exposes file
* systems with a variety of st_dev reported. Also, btrfs
* subvolumes have different st_dev, even though they aren't
* real mounts of their own. */
@@ -228,15 +229,14 @@ int path_is_mount_point(const char *t, int flags) {
if (!parent)
return -ENOMEM;
- fd = openat(AT_FDCWD, parent, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_PATH);
+ fd = openat(AT_FDCWD, parent, O_DIRECTORY|O_CLOEXEC|O_PATH);
if (fd < 0)
return -errno;
return fd_is_mount_point(fd, basename(t), flags);
}
-/// UNNEEDED by elogind
-#if 0
+#if 0 /// UNNEEDED by elogind
int umount_recursive(const char *prefix, int flags) {
bool again;
int n = 0, r;
@@ -448,21 +448,21 @@ int bind_remount_recursive(const char *prefix, bool ro) {
if (r < 0)
return r;
- /* Try to reuse the original flag set, but
- * don't care for errors, in case of
- * obstructed mounts */
+ /* Deal with mount points that are obstructed by a
+ * later mount */
+ r = path_is_mount_point(x, 0);
+ if (r == -ENOENT || r == 0)
+ continue;
+ if (r < 0)
+ return r;
+
+ /* Try to reuse the original flag set */
orig_flags = 0;
(void) get_mount_flags(x, &orig_flags);
orig_flags &= ~MS_RDONLY;
- if (mount(NULL, x, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0) {
-
- /* Deal with mount points that are
- * obstructed by a later mount */
-
- if (errno != ENOENT)
- return -errno;
- }
+ if (mount(NULL, x, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0)
+ return -errno;
}
}
@@ -498,7 +498,10 @@ bool fstype_is_network(const char *fstype) {
"nfs4\0"
"gfs\0"
"gfs2\0"
- "glusterfs\0";
+ "glusterfs\0"
+ "pvfs2\0" /* OrangeFS */
+ "ocfs2\0"
+ ;
const char *x;
@@ -530,3 +533,28 @@ int repeat_unmount(const char *path, int flags) {
}
}
#endif // 0
+
+const char* mode_to_inaccessible_node(mode_t mode) {
+ /* This function maps a node type to the correspondent inaccessible node type.
+ * Character and block inaccessible devices may not be created (because major=0 and minor=0),
+ * in such case we map character and block devices to the inaccessible node type socket. */
+ switch(mode & S_IFMT) {
+ case S_IFREG:
+ return "/run/systemd/inaccessible/reg";
+ case S_IFDIR:
+ return "/run/systemd/inaccessible/dir";
+ case S_IFCHR:
+ if (access("/run/systemd/inaccessible/chr", F_OK) == 0)
+ return "/run/systemd/inaccessible/chr";
+ return "/run/systemd/inaccessible/sock";
+ case S_IFBLK:
+ if (access("/run/systemd/inaccessible/blk", F_OK) == 0)
+ return "/run/systemd/inaccessible/blk";
+ return "/run/systemd/inaccessible/sock";
+ case S_IFIFO:
+ return "/run/systemd/inaccessible/fifo";
+ case S_IFSOCK:
+ return "/run/systemd/inaccessible/sock";
+ }
+ return NULL;
+}