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authorMiklos Szeredi <mszeredi@suse.cz>2010-08-10 13:41:41 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-11 08:29:47 +0400
commit8df9d1a4142311c084ffeeacb67cd34d190eff74 (patch)
tree512e018114ea506659fac73d838bfca0fb97a5a4 /include
parentffd1f4ed5bddccf2277e3d8525bcedf1983319f8 (diff)
downloadlinux-8df9d1a4142311c084ffeeacb67cd34d190eff74.tar.xz
vfs: show unreachable paths in getcwd and proc
Prepend "(unreachable)" to path strings if the path is not reachable from the current root. Two places updated are - the return string from getcwd() - and symlinks under /proc/$PID. Other uses of d_path() are left unchanged (we know that some old software crashes if /proc/mounts is changed). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/dcache.h1
-rw-r--r--include/linux/path.h5
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index d23be0386e2d..6a4aea30aa09 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -315,6 +315,7 @@ extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
extern char *__d_path(const struct path *path, struct path *root, char *, int);
extern char *d_path(const struct path *, char *, int);
+extern char *d_path_with_unreachable(const struct path *, char *, int);
extern char *__dentry_path(struct dentry *, char *, int);
extern char *dentry_path(struct dentry *, char *, int);
diff --git a/include/linux/path.h b/include/linux/path.h
index 915e0c382a51..edc98dec6266 100644
--- a/include/linux/path.h
+++ b/include/linux/path.h
@@ -12,4 +12,9 @@ struct path {
extern void path_get(struct path *);
extern void path_put(struct path *);
+static inline int path_equal(const struct path *path1, const struct path *path2)
+{
+ return path1->mnt == path2->mnt && path1->dentry == path2->dentry;
+}
+
#endif /* _LINUX_PATH_H */