mirror of
https://github.com/SELinuxProject/selinux
synced 2025-04-29 14:18:02 +00:00
7d5a89314b
To copy string safely, by always NULL-terminating them, and provide an easy way to check for truncation introduce the nonstandard function strlcpy(3). Use the system implementation if available. Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
#ifndef SELINUX_INTERNAL_H_
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#define SELINUX_INTERNAL_H_
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#include <selinux/selinux.h>
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#include <pthread.h>
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extern int require_seusers ;
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extern int selinux_page_size ;
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/* Make pthread_once optional */
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#pragma weak pthread_once
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#pragma weak pthread_key_create
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#pragma weak pthread_key_delete
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#pragma weak pthread_setspecific
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/* Call handler iff the first call. */
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#define __selinux_once(ONCE_CONTROL, INIT_FUNCTION) \
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do { \
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if (pthread_once != NULL) \
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pthread_once (&(ONCE_CONTROL), (INIT_FUNCTION)); \
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else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \
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INIT_FUNCTION (); \
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(ONCE_CONTROL) = 2; \
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} \
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} while (0)
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/* Pthread key macros */
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#define __selinux_key_create(KEY, DESTRUCTOR) \
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(pthread_key_create != NULL ? pthread_key_create(KEY, DESTRUCTOR) : -1)
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#define __selinux_key_delete(KEY) \
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do { \
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if (pthread_key_delete != NULL) \
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pthread_key_delete(KEY); \
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} while (0)
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#define __selinux_setspecific(KEY, VALUE) \
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do { \
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if (pthread_setspecific != NULL) \
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pthread_setspecific(KEY, VALUE); \
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} while (0)
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/* selabel_lookup() is only thread safe if we're compiled with pthreads */
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#pragma weak pthread_mutex_init
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#pragma weak pthread_mutex_destroy
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#pragma weak pthread_mutex_lock
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#pragma weak pthread_mutex_unlock
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#define __pthread_mutex_init(LOCK, ATTR) \
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do { \
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if (pthread_mutex_init != NULL) \
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pthread_mutex_init(LOCK, ATTR); \
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} while (0)
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#define __pthread_mutex_destroy(LOCK) \
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do { \
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if (pthread_mutex_destroy != NULL) \
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pthread_mutex_destroy(LOCK); \
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} while (0)
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#define __pthread_mutex_lock(LOCK) \
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do { \
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if (pthread_mutex_lock != NULL) \
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pthread_mutex_lock(LOCK); \
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} while (0)
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#define __pthread_mutex_unlock(LOCK) \
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do { \
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if (pthread_mutex_unlock != NULL) \
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pthread_mutex_unlock(LOCK); \
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} while (0)
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#pragma weak pthread_create
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#pragma weak pthread_join
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#pragma weak pthread_cond_init
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#pragma weak pthread_cond_signal
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#pragma weak pthread_cond_destroy
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#pragma weak pthread_cond_wait
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/* check if all functions needed to do parallel operations are available */
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#define __pthread_supported ( \
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pthread_create && \
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pthread_join && \
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pthread_cond_init && \
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pthread_cond_destroy && \
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pthread_cond_signal && \
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pthread_cond_wait \
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)
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#define SELINUXDIR "/etc/selinux/"
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#define SELINUXCONFIG SELINUXDIR "config"
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extern int has_selinux_config ;
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#ifndef HAVE_STRLCPY
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size_t strlcpy(char *dest, const char *src, size_t size);
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#endif
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#endif /* SELINUX_INTERNAL_H_ */
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