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pci-sysfs: use proper file capability helper function 

The PCI config access checked the file capabilities correctly, but used
the itnernal security capability check rather than the helper function
that is actually meant for that.

The security_capable() has unusual return values and is not meant to be
used elsewhere (the only other use is in the capability checking
functions that we actually intend people to use, and this odd PCI usage
really stood out when looking around the capability code.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2016-04-14 12:00:21 -07:00
parent 34dbbcdbf6
commit ab0fa82b2d
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/pci-sysfs.c
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@ -636,7 +636,7 @@ static ssize_t pci_read_config(struct file *filp, struct kobject *kobj,
u8 *data = (u8 *) buf;
/* Several chips lock up trying to read undefined config space */
if (security_capable(filp->f_cred, &init_user_ns, CAP_SYS_ADMIN) == 0)
if (file_ns_capable(filp, &init_user_ns, CAP_SYS_ADMIN))
size = dev->cfg_size;
else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
size = 128;