diff options
Diffstat (limited to 'libc/sysdeps/linux/aarch64')
| -rw-r--r-- | libc/sysdeps/linux/aarch64/bits/shm.h | 87 | 
1 files changed, 87 insertions, 0 deletions
| diff --git a/libc/sysdeps/linux/aarch64/bits/shm.h b/libc/sysdeps/linux/aarch64/bits/shm.h new file mode 100644 index 000000000..bfb603499 --- /dev/null +++ b/libc/sysdeps/linux/aarch64/bits/shm.h @@ -0,0 +1,87 @@ +/* + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB + * in this tarball. + */ + +#ifndef _SYS_SHM_H +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <bits/types.h> + +/* Permission flag for shmget.  */ +#define SHM_R		0400		/* or S_IRUGO from <linux/stat.h> */ +#define SHM_W		0200		/* or S_IWUGO from <linux/stat.h> */ + +/* Flags for `shmat'.  */ +#define SHM_RDONLY	010000		/* attach read-only else read-write */ +#define SHM_RND		020000		/* round attach address to SHMLBA */ +#define SHM_REMAP	040000		/* take-over region on attach */ + +/* Commands for `shmctl'.  */ +#define SHM_LOCK	11		/* lock segment (root only) */ +#define SHM_UNLOCK	12		/* unlock segment (root only) */ + +__BEGIN_DECLS + +/* Segment low boundary address multiple.  */ +#define SHMLBA		(__getpagesize () << 2) +extern int __getpagesize (void) __THROW __attribute__ ((__const__)); + + +/* Type to count number of attaches.  */ +typedef unsigned long int shmatt_t; + +/* Data structure describing a set of semaphores.  */ +struct shmid_ds +  { +    struct ipc_perm shm_perm;		/* operation permission struct */ +    size_t shm_segsz;			/* size of segment in bytes */ +    __time_t shm_atime;			/* time of last shmat() */ +    __time_t shm_dtime;			/* time of last shmdt() */ +    __time_t shm_ctime;			/* time of last change by shmctl() */ +    __pid_t shm_cpid;			/* pid of creator */ +    __pid_t shm_lpid;			/* pid of last shmop */ +    shmatt_t shm_nattch;		/* number of current attaches */ +    unsigned long int __uclibc_unused1; +    unsigned long int __uclibc_unused2; +  }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 	13 +# define SHM_INFO 	14 + +/* shm_mode upper byte flags */ +# define SHM_DEST	01000	/* segment will be destroyed on last detach */ +# define SHM_LOCKED	02000   /* segment will not be swapped */ +# define SHM_HUGETLB	04000	/* segment is mapped via hugetlb */ +# define SHM_NORESERVE	010000	/* don't check for reservations */ + +struct	shminfo +  { +    unsigned long int shmmax; +    unsigned long int shmmin; +    unsigned long int shmmni; +    unsigned long int shmseg; +    unsigned long int shmall; +    unsigned long int __uclibc_unused1; +    unsigned long int __uclibc_unused2; +    unsigned long int __uclibc_unused3; +    unsigned long int __uclibc_unused4; +  }; + +struct shm_info +  { +    int used_ids; +    unsigned long int shm_tot;	/* total allocated shm */ +    unsigned long int shm_rss;	/* total resident shm */ +    unsigned long int shm_swp;	/* total swapped shm */ +    unsigned long int swap_attempts; +    unsigned long int swap_successes; +  }; + +#endif /* __USE_MISC */ + +__END_DECLS | 
