Commit Graph

2 Commits

Author SHA1 Message Date
Mike Frysinger
ba10a421b8 Support C libraries without System V shared memory/ipc
Some systems (like Bionic) omit support for SysV related code.  That
means no C library headers for strace to include.  Add configure tests
to probe the headers from the kernel and use them when they are
available.

It might make more sense to never rely on the C library's headers as
there is no guarantee or requirement that the structure layout between
apps and the C library match that what is passed to the kernel.

* configure.ac (AC_CHECK_HEADERS): Check for linux/ipc.h,
linux/mqueue.h, linux/msg.h, linux/sem.h, linux/shm.h,
sys/ipc.h, sys/msg.h, sys/sem.h, and sys/shm.h.
* ipc_defs.h: Include <sys/ipc.h> or <linux/ipc.h> depending
on what is available.
* ipc_msg.c: Replace <sys/ipc.h> with "ipc_defs.h".
Fallback to <linux/msg.h> when available.
* ipc_msgctl.c: Include <sys/msg.h>, <asm/msgbuf.h>, or <linux/msg.h>
based on what is available.  Note missing support for old ipc structs.
* ipc_sem.c: Include <sys/sem.h> or <linux/sem.h> depending
on what is available.  Only decode sembuf when available.
* ipc_shm.c: Fallback to <linux/shm.h> when available.
* ipc_shmctl.c: Include <sys/shm.h>, <asm/shmbuf.h>, or <linux/shm.h>
based on what is available.  Note missing support for old ipc structs.
* print_mq_attr.c: Fallback to <linux/mqueue.h> when available.
2015-11-26 01:36:58 +00:00
Elvira Khabirova
c01ad06002 ipc.c: split into separate files
In preparation for upcoming mpers-related changes,
split ipc.c into independent groups of parsers.

* ipc_defs.h: New file.
* ipc_msg.c: Likewise.
* ipc_msgctl.c: Likewise.
* ipc_sem.c: Likewise.
* ipc_shm.c: Likewise.
* ipc_shmctl.c: Likewise.
* mq.c: Likewise.
* print_mq_attr.c: Likewise.
* print_msgbuf.c: Likewise.
* ipc.c: Remove.
(sys_mq_open, sys_mq_timedsend, sys_mq_timedreceive, sys_mq_notify,
sys_mq_getsetattr): Move to mq.c.
(sys_msgget, tprint_msgsnd, sys_msgsnd, tprint_msgrcv, sys_msgrcv): Move
to ipc_msg.c.
(sys_msgctl): Move to ipc_msgctl.c.
(tprint_sembuf, tprint_sembuf_array, sys_semop, sys_semtimedop,
sys_semget, syssemctl): Move to ipc_sem.c.
(sys_shmget, sys_shmat, sys_shmdt): Move to ipc_shm.c.
(sys_shmctl): Move to ipc_shmctl.c.
(printmqattr): Move to print_mq_attr.c.
(tprint_msgbuf): Move to print_msgbuf.c.
(IPC_64, PRINTCTL): Move to ipc_defs.h.
* defs.h (struct xlat resource_flags): New prototype.
* Makefile.am (strace_SOURCES): Remove ipc.c.  Add ipc_defs.h, mq.c,
ipc_msg.c, ipc_msgctl.c, ipc_sem.c, ipc_shm.c, ipc_shmctl.c,
print_mq_attr.c, and print_msgbuf.c.
2015-08-20 22:21:04 +03:00