A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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[PATCH] add a file_permission helper

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A few more callers of permission() just want to check for a different access
pattern on an already open file.  This patch adds a wrapper for permission()
that takes a file in preparation of per-mount read-only support and to clean
up the callers a little.  The helper is not intended for new code, everything
without the interface set in stone should use vfs_permission()

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Hellwig 2005-11-08 21:35:04 -08:00 • committed by Linus Torvalds
commit 8c744fb83d
8 changed files with 47 additions and 21 deletions
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fs/exec.c
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@ -896,7 +896,7 @@ int flush_old_exec(struct linux_binprm * bprm)
flush_thread();
if (bprm->e_uid != current->euid || bprm->e_gid != current->egid ||
permission(bprm->file->f_dentry->d_inode,MAY_READ, NULL) ||
file_permission(bprm->file, MAY_READ) ||
(bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP)) {
suid_keys(current);
current->mm->dumpable = suid_dumpable;