path: root/include/linux
diff options
authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-14 10:06:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-14 10:06:31 -0700
commit935d8aabd4331f47a89c3e1daa5779d23cf244ee (patch)
tree8fff6fba14f11a55cea7a9fd3adc2e8d418b4ee1 /include/linux
parent5b55d708335a9e3e4f61f2dadf7511502205ccd1 (diff)
Add file_ns_capable() helper function for open-time capability checking
Nothing is using it yet, but this will allow us to delay the open-time checks to use time, without breaking the normal UNIX permission semantics where permissions are determined by the opener (and the file descriptor can then be passed to a different process, or the process can drop capabilities). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h
index 98503b79236..d9a4f7f40f3 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -35,6 +35,7 @@ struct cpu_vfs_cap_data {
#define _KERNEL_CAP_T_SIZE (sizeof(kernel_cap_t))
+struct file;
struct inode;
struct dentry;
struct user_namespace;
@@ -211,6 +212,7 @@ extern bool capable(int cap);
extern bool ns_capable(struct user_namespace *ns, int cap);
extern bool nsown_capable(int cap);
extern bool inode_capable(const struct inode *inode, int cap);
+extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap);
/* audit system wants to get cap info from files as well */
extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);