diff options
| -rw-r--r-- | include/linux/security.h | 3 | ||||
| -rw-r--r-- | security/apparmor/lsm.c | 2 | ||||
| -rw-r--r-- | security/commoncap.c | 32 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 2 | ||||
| -rw-r--r-- | security/smack/smack_lsm.c | 2 |
5 files changed, 28 insertions, 13 deletions
diff --git a/include/linux/security.h b/include/linux/security.h index ab0e091ce5fa..4ad59c9fa731 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -86,6 +86,7 @@ extern int cap_inode_setxattr(struct dentry *dentry, const char *name, extern int cap_inode_removexattr(struct dentry *dentry, const char *name); extern int cap_inode_need_killpriv(struct dentry *dentry); extern int cap_inode_killpriv(struct dentry *dentry); +extern int cap_mmap_addr(unsigned long addr); extern int cap_file_mmap(struct file *file, unsigned long reqprot, unsigned long prot, unsigned long flags, unsigned long addr, unsigned long addr_only); @@ -2187,7 +2188,7 @@ static inline int security_file_mmap(struct file *file, unsigned long reqprot, unsigned long addr, unsigned long addr_only) { - return cap_file_mmap(file, reqprot, prot, flags, addr, addr_only); + return cap_mmap_addr(addr); } static inline int security_file_mprotect(struct vm_area_struct *vma, diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index 032daab449b0..8430d8937afb 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -497,7 +497,7 @@ static int apparmor_file_mmap(struct file *file, unsigned long reqprot, int rc = 0; /* do DAC check */ - rc = cap_file_mmap(file, reqprot, prot, flags, addr, addr_only); + rc = cap_mmap_addr(addr); if (rc || addr_only) return rc; diff --git a/security/commoncap.c b/security/commoncap.c index e771cb1b2d79..ebac3618896e 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -958,22 +958,15 @@ int cap_vm_enough_memory(struct mm_struct *mm, long pages) } /* - * cap_file_mmap - check if able to map given addr - * @file: unused - * @reqprot: unused - * @prot: unused - * @flags: unused + * cap_mmap_addr - check if able to map given addr * @addr: address attempting to be mapped - * @addr_only: unused * * If the process is attempting to map memory below dac_mmap_min_addr they need * CAP_SYS_RAWIO. The other parameters to this function are unused by the * capability security module. Returns 0 if this mapping should be allowed * -EPERM if not. */ -int cap_file_mmap(struct file *file, unsigned long reqprot, - unsigned long prot, unsigned long flags, - unsigned long addr, unsigned long addr_only) +int cap_mmap_addr(unsigned long addr) { int ret = 0; @@ -986,3 +979,24 @@ int cap_file_mmap(struct file *file, unsigned long reqprot, } return ret; } + +/* + * cap_file_mmap - check if able to map given addr + * @file: unused + * @reqprot: unused + * @prot: unused + * @flags: unused + * @addr: address attempting to be mapped + * @addr_only: unused + * + * If the process is attempting to map memory below dac_mmap_min_addr they need + * CAP_SYS_RAWIO. The other parameters to this function are unused by the + * capability security module. Returns 0 if this mapping should be allowed + * -EPERM if not. + */ +int cap_file_mmap(struct file *file, unsigned long reqprot, + unsigned long prot, unsigned long flags, + unsigned long addr, unsigned long addr_only) +{ + return cap_mmap_addr(addr); +} diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index fa2341b68331..25c125eaa3d8 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3104,7 +3104,7 @@ static int selinux_file_mmap(struct file *file, unsigned long reqprot, } /* do DAC check on address space usage */ - rc = cap_file_mmap(file, reqprot, prot, flags, addr, addr_only); + rc = cap_mmap_addr(addr); if (rc || addr_only) return rc; diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index d583c0545808..a62197718768 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -1199,7 +1199,7 @@ static int smack_file_mmap(struct file *file, int rc; /* do DAC check on address space usage */ - rc = cap_file_mmap(file, reqprot, prot, flags, addr, addr_only); + rc = cap_mmap_addr(addr); if (rc || addr_only) return rc; |