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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>
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4 changed files with 57 additions and 5 deletions
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@ -12,4 +12,9 @@ struct path {
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extern void path_get(struct path *);
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extern void path_put(struct path *);
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static inline int path_equal(const struct path *path1, const struct path *path2)
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{
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return path1->mnt == path2->mnt && path1->dentry == path2->dentry;
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}
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#endif /* _LINUX_PATH_H */
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