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Remove credential configure checks.

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The groups_search() function was never exported by a mainline kernel
therefore we drop this compatibility code and always provide our own
implementation.

Additionally, the cred_t structure has been available since 2.6.29
so there is no longer a need to maintain compatibility code.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2014-10-02 13:41:09 -04:00
parent e39174ed56
commit 68a829b29d
3 changed files with 23 additions and 174 deletions
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include/sys/cred.h
+23 -34
View File
@@ -29,49 +29,38 @@
#include <sys/types.h>
#include <sys/vfs.h>
#ifdef HAVE_CRED_STRUCT
typedef struct cred cred_t;
#define kcred ((cred_t *)(init_task.cred))
#define CRED() ((cred_t *)current_cred())
#else
typedef struct task_struct cred_t;
#define kcred ((cred_t *)&init_task)
#define CRED() ((cred_t *)current)
#endif /* HAVE_CRED_STRUCT */
#define kcred ((cred_t *)(init_task.cred))
#define CRED() ((cred_t *)current_cred())
#ifdef HAVE_KUIDGID_T
/*
* Linux 3.8+ uses typedefs to redefine uid_t and gid_t. We have to rename the
* typedefs to recover the original types. We then can use them provided that
* we are careful about translating from k{g,u}id_t to the original versions
* and vice versa.
*/
#define uid_t xuid_t
#define gid_t xgid_t
#include <linux/uidgid.h>
#undef uid_t
#undef gid_t
/*
* Linux 3.8+ uses typedefs to redefine uid_t and gid_t. We have to rename the
* typedefs to recover the original types. We then can use them provided that
* we are careful about translating from k{g,u}id_t to the original versions
* and vice versa.
*/
#define uid_t xuid_t
#define gid_t xgid_t
#include <linux/uidgid.h>
#undef uid_t
#undef gid_t
#define KUID_TO_SUID(x) (__kuid_val(x))
#define KGID_TO_SGID(x) (__kgid_val(x))
#define SUID_TO_KUID(x) (KUIDT_INIT(x))
#define SGID_TO_KGID(x) (KGIDT_INIT(x))
#define KGIDP_TO_SGIDP(x) (&(x)->val)
#define KUID_TO_SUID(x) (__kuid_val(x))
#define KGID_TO_SGID(x) (__kgid_val(x))
#define SUID_TO_KUID(x) (KUIDT_INIT(x))
#define SGID_TO_KGID(x) (KGIDT_INIT(x))
#define KGIDP_TO_SGIDP(x) (&(x)->val)
#else /* HAVE_KUIDGID_T */
#define KUID_TO_SUID(x) (x)
#define KGID_TO_SGID(x) (x)
#define SUID_TO_KUID(x) (x)
#define SGID_TO_KGID(x) (x)
#define KGIDP_TO_SGIDP(x) (x)
#define KUID_TO_SUID(x) (x)
#define KGID_TO_SGID(x) (x)
#define SUID_TO_KUID(x) (x)
#define SGID_TO_KGID(x) (x)
#define KGIDP_TO_SGIDP(x) (x)
#endif /* HAVE_KUIDGID_T */