Hi, I was asked if we can add this patch to our kernel in Fedora.
It's for ability to open a directory with execute permission but without read permission.
Michal -------- Original Message -------- Michal, can you ask the Fedora Linux kernel people to backport this patch, please (this is going to be needed by both ksh93 and KDE4)? Josh ---------- Forwarded message ---------- From: Greg KH <[email protected]> Date: Thu, Jul 12, 2012 at 7:51 PM Subject: [ 42/68] vfs: make O_PATH file descriptors usable for fchdir() To: [email protected], [email protected] Cc: [email protected], [email protected], [email protected], Al Viro <[email protected]> 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Linus Torvalds <[email protected]> commit 332a2e1244bd08b9e3ecd378028513396a004a24 upstream. We already use them for openat() and friends, but fchdir() also wants to be able to use O_PATH file descriptors. This should make it comparable to the O_SEARCH of Solaris. In particular, O_PATH allows you to access (not-quite-open) a directory you don't have read persmission to, only execute permission. Noticed during development of multithread support for ksh93. Reported-by: ольга крыжановская <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/open.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/fs/open.c +++ b/fs/open.c @@ -396,10 +396,10 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd { struct file *file; struct inode *inode; - int error; + int error, fput_needed; error = -EBADF; - file = fget(fd); + file = fget_raw_light(fd, &fput_needed); if (!file) goto out; @@ -413,7 +413,7 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd if (!error) set_fs_pwd(current->fs, &file->f_path); out_putf: - fput(file); + fput_light(file, fput_needed); out: return error; } Josh _______________________________________________ kernel mailing list [email protected] https://admin.fedoraproject.org/mailman/listinfo/kernel
