A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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pass creds to get_empty_filp(), make sure dentry_open() passes the right creds

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... and rename get_empty_filp() to alloc_empty_file().

dentry_open() gets creds as argument, but the only thing that sees those is
security_file_open() - file->f_cred still ends up with current_cred().  For
almost all callers it's the same thing, but there are several broken cases.

Acked-by: Linus Torvalds <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2018-07-10 13:12:05 -04:00
commit 6de37b6dc0
4 changed files with 5 additions and 6 deletions
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2
fs/open.c
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@ -921,7 +921,7 @@ struct file *dentry_open(const struct path *path, int flags,
/* We must always pass in a valid mount pointer. */
BUG_ON(!path->mnt);
f = get_empty_filp();
f = alloc_empty_file(cred);
if (!IS_ERR(f)) {
f->f_flags = flags;
error = vfs_open(path, f, cred);