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libbdev: fix IOCTL grant access bug

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Reported by Coverity.

Change-Id: I34983312bebd9bf2449412b7dfa691ed208867ea
This commit is contained in:
David van Moolenbroek 2013-10-22 14:00:02 +00:00
parent 36041198ad
commit daf0e5cc89
1 changed files with 2 additions and 2 deletions
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4
lib/libbdev/bdev.c
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@ -323,8 +323,8 @@ static int bdev_ioctl_setup(dev_t dev, int request, void *buf, message *m)
size = _MINIX_IOCTL_SIZE(request);
access = 0;
if (_MINIX_IOCTL_IOR(access)) access |= CPF_WRITE;
if (_MINIX_IOCTL_IOW(access)) access |= CPF_READ;
if (_MINIX_IOCTL_IOR(request)) access |= CPF_WRITE;
if (_MINIX_IOCTL_IOW(request)) access |= CPF_READ;
/* The size may be 0, in which case 'buf' need not be a valid pointer. */
grant = cpf_grant_direct(endpt, (vir_bytes) buf, size, access);