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| author | Eric Paris <eparis@redhat.com> | 2009-08-13 09:45:03 -0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-08-14 11:18:40 +1000 |
| commit | 25354c4fee169710fd9da15f3bb2abaa24dcf933 (patch) | |
| tree | 7fb462945c15ce09392ae858c8ae757290b5ed2d | |
| parent | 9188499cdb117d86a1ea6b04374095b098d56936 (diff) | |
| download | linux-stable-25354c4fee169710fd9da15f3bb2abaa24dcf933.tar.gz linux-stable-25354c4fee169710fd9da15f3bb2abaa24dcf933.tar.bz2 linux-stable-25354c4fee169710fd9da15f3bb2abaa24dcf933.zip | |
SELinux: add selinux_kernel_module_request
This patch adds a new selinux hook so SELinux can arbitrate if a given
process should be allowed to trigger a request for the kernel to try to
load a module. This is a different operation than a process trying to load
a module itself, which is already protected by CAP_SYS_MODULE.
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
| -rw-r--r-- | security/selinux/hooks.c | 6 | ||||
| -rw-r--r-- | security/selinux/include/av_perm_to_string.h | 1 | ||||
| -rw-r--r-- | security/selinux/include/av_permissions.h | 1 |
3 files changed, 8 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 5dee88362e71..5aa45b168122 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3296,6 +3296,11 @@ static int selinux_kernel_create_files_as(struct cred *new, struct inode *inode) return 0; } +static int selinux_kernel_module_request(void) +{ + return task_has_system(current, SYSTEM__MODULE_REQUEST); +} + static int selinux_task_setpgid(struct task_struct *p, pid_t pgid) { return current_has_perm(p, PROCESS__SETPGID); @@ -5404,6 +5409,7 @@ static struct security_operations selinux_ops = { .cred_prepare = selinux_cred_prepare, .kernel_act_as = selinux_kernel_act_as, .kernel_create_files_as = selinux_kernel_create_files_as, + .kernel_module_request = selinux_kernel_module_request, .task_setpgid = selinux_task_setpgid, .task_getpgid = selinux_task_getpgid, .task_getsid = selinux_task_getsid, diff --git a/security/selinux/include/av_perm_to_string.h b/security/selinux/include/av_perm_to_string.h index 31df1d7c1aee..2b683ad83d21 100644 --- a/security/selinux/include/av_perm_to_string.h +++ b/security/selinux/include/av_perm_to_string.h @@ -107,6 +107,7 @@ S_(SECCLASS_SYSTEM, SYSTEM__SYSLOG_READ, "syslog_read") S_(SECCLASS_SYSTEM, SYSTEM__SYSLOG_MOD, "syslog_mod") S_(SECCLASS_SYSTEM, SYSTEM__SYSLOG_CONSOLE, "syslog_console") + S_(SECCLASS_SYSTEM, SYSTEM__MODULE_REQUEST, "module_request") S_(SECCLASS_CAPABILITY, CAPABILITY__CHOWN, "chown") S_(SECCLASS_CAPABILITY, CAPABILITY__DAC_OVERRIDE, "dac_override") S_(SECCLASS_CAPABILITY, CAPABILITY__DAC_READ_SEARCH, "dac_read_search") diff --git a/security/selinux/include/av_permissions.h b/security/selinux/include/av_permissions.h index d645192ee950..21c722669902 100644 --- a/security/selinux/include/av_permissions.h +++ b/security/selinux/include/av_permissions.h @@ -508,6 +508,7 @@ #define SYSTEM__SYSLOG_READ 0x00000002UL #define SYSTEM__SYSLOG_MOD 0x00000004UL #define SYSTEM__SYSLOG_CONSOLE 0x00000008UL +#define SYSTEM__MODULE_REQUEST 0x00000010UL #define CAPABILITY__CHOWN 0x00000001UL #define CAPABILITY__DAC_OVERRIDE 0x00000002UL #define CAPABILITY__DAC_READ_SEARCH 0x00000004UL |