b=11680 fix sles11 build.

[fs/lustre-release.git] / libcfs / libcfs / linux / linux-curproc.c

diff --git a/libcfs/libcfs/linux/linux-curproc.c b/libcfs/libcfs/linux/linux-curproc.c
index 391f624..9223366 100644 (file)
--- a/libcfs/libcfs/linux/linux-curproc.c
+++ b/libcfs/libcfs/linux/linux-curproc.c
@@ -41,6 +41,7 @@
  */
 
 #include <linux/sched.h>
+#include <linux/fs_struct.h>
 
 #define DEBUG_SUBSYSTEM S_LNET
 
@@ -53,22 +54,32 @@
 
 uid_t  cfs_curproc_uid(void)
 {
-        return current->uid;
+        return current_uid();
 }
 
 gid_t  cfs_curproc_gid(void)
 {
-        return current->gid;
+        return current_gid();
 }
 
 uid_t  cfs_curproc_fsuid(void)
 {
-        return current->fsuid;
+        return current_fsuid();
+}
+
+uid_t  cfs_curproc_euid(void)
+{
+        return current_euid();
+}
+
+uid_t  cfs_curproc_egid(void)
+{
+        return current_egid();
 }
 
 gid_t  cfs_curproc_fsgid(void)
 {
-        return current->fsgid;
+        return current_fsgid();
 }
 
 pid_t  cfs_curproc_pid(void)
@@ -82,7 +93,7 @@ int    cfs_curproc_groups_nr(void)
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
         task_lock(current);
-        nr = current->group_info->ngroups;
+        nr = current_cred()->group_info->ngroups;
         task_unlock(current);
 #else
         nr = current->ngroups;
@@ -94,8 +105,8 @@ void   cfs_curproc_groups_dump(gid_t *array, int size)
 {
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
         task_lock(current);
-        size = min_t(int, size, current->group_info->ngroups);
-        memcpy(array, current->group_info->blocks[0], size * sizeof(__u32));
+        size = min_t(int, size, current_cred()->group_info->ngroups);
+        memcpy(array, current_cred()->group_info->blocks[0], size * sizeof(__u32));
         task_unlock(current);
 #else
         LASSERT(size <= NGROUPS);
@@ -120,19 +131,86 @@ char  *cfs_curproc_comm(void)
         return current->comm;
 }
 
-cfs_kernel_cap_t cfs_curproc_cap_get(void)
+/* Currently all the CFS_CAP_* defines match CAP_* ones. */
+#define cfs_cap_pack(cap) (cap)
+#define cfs_cap_unpack(cap) (cap)
+
+void cfs_cap_raise(cfs_cap_t cap)
+{
+        struct cred *cred;
+        if ((cred = prepare_creds())) {
+                cap_raise(cred->cap_effective, cfs_cap_unpack(cap));
+                commit_creds(cred);
+        }
+}
+
+void cfs_cap_lower(cfs_cap_t cap)
+{
+        struct cred *cred;
+        if ((cred = prepare_creds())) {
+                cap_lower(cred->cap_effective, cfs_cap_unpack(cap));
+                commit_creds(cred);
+        }
+}
+
+int cfs_cap_raised(cfs_cap_t cap)
+{
+        return cap_raised(current_cap(), cfs_cap_unpack(cap));
+}
+
+void cfs_kernel_cap_pack(cfs_kernel_cap_t kcap, cfs_cap_t *cap)
+{
+#if defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x19980330
+        *cap = cfs_cap_pack(kcap);
+#elif defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x20071026
+        *cap = cfs_cap_pack(kcap[0]);
+#elif defined(_KERNEL_CAPABILITY_VERSION) && _KERNEL_CAPABILITY_VERSION == 0x20080522
+        /* XXX lost high byte */
+        *cap = cfs_cap_pack(kcap.cap[0]);
+#else
+        #error "need correct _KERNEL_CAPABILITY_VERSION "
+#endif
+}
+
+void cfs_kernel_cap_unpack(cfs_kernel_cap_t *kcap, cfs_cap_t cap)
+{
+#if defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x19980330
+        *kcap = cfs_cap_unpack(cap);
+#elif defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x20071026
+        (*kcap)[0] = cfs_cap_unpack(cap);
+#elif defined(_KERNEL_CAPABILITY_VERSION) && _KERNEL_CAPABILITY_VERSION == 0x20080522
+        kcap->cap[0] = cfs_cap_unpack(cap);
+#else
+        #error "need correct _KERNEL_CAPABILITY_VERSION "
+#endif
+}
+
+cfs_cap_t cfs_curproc_cap_pack(void)
+{
+        cfs_cap_t cap;
+        cfs_kernel_cap_pack(current_cap(), &cap);
+        return cap;
+}
+
+void cfs_curproc_cap_unpack(cfs_cap_t cap)
 {
-        return current->cap_effective;
+        struct cred *cred;
+        if ((cred = prepare_creds())) {
+                cfs_kernel_cap_unpack(&cred->cap_effective, cap);
+                commit_creds(cred);
+        }
 }
 
-void cfs_curproc_cap_set(cfs_kernel_cap_t cap)
+int cfs_capable(cfs_cap_t cap)
 {
-        current->cap_effective = cap;
+        return capable(cfs_cap_unpack(cap));
 }
 
 EXPORT_SYMBOL(cfs_curproc_uid);
 EXPORT_SYMBOL(cfs_curproc_pid);
+EXPORT_SYMBOL(cfs_curproc_euid);
 EXPORT_SYMBOL(cfs_curproc_gid);
+EXPORT_SYMBOL(cfs_curproc_egid);
 EXPORT_SYMBOL(cfs_curproc_fsuid);
 EXPORT_SYMBOL(cfs_curproc_fsgid);
 EXPORT_SYMBOL(cfs_curproc_umask);
@@ -140,8 +218,12 @@ EXPORT_SYMBOL(cfs_curproc_comm);
 EXPORT_SYMBOL(cfs_curproc_groups_nr);
 EXPORT_SYMBOL(cfs_curproc_groups_dump);
 EXPORT_SYMBOL(cfs_curproc_is_in_groups);
-EXPORT_SYMBOL(cfs_curproc_cap_get);
-EXPORT_SYMBOL(cfs_curproc_cap_set);
+EXPORT_SYMBOL(cfs_cap_raise);
+EXPORT_SYMBOL(cfs_cap_lower);
+EXPORT_SYMBOL(cfs_cap_raised);
+EXPORT_SYMBOL(cfs_curproc_cap_pack);
+EXPORT_SYMBOL(cfs_curproc_cap_unpack);
+EXPORT_SYMBOL(cfs_capable);
 
 /*
  * Local variables: