45 #include <sys/syscall.h>
65 static kmutex_t systrace_lock;		/* syscall tracing lock */
139  * Called from syscall() when a non-trivial 32-bit system call occurs.
160 	 * system call.  This is for the loadable-syscall case where the  in syscall_entry()
178 		 * it either points to syscall-entry-saved amd64 regs,  in syscall_entry()
181 		 * /proc has possibly mucked with the syscall args.  in syscall_entry()
190 	 * for syscall handling.  in syscall_entry()
233  * requiring pre-syscall handling must set the t_pre_sys flag. If the
245 	t->t_pre_sys = repost = 0;	/* clear pre-syscall processing flag */  in pre_syscall()
254 	 * On the amd64 kernel, the syscall arguments in the rdi..r9  in pre_syscall()
303 				 * /proc may have modified syscall args,  in pre_syscall()
306 				 * copy them again, both for the syscall  in pre_syscall()
311 				 * the syscall ml code redoes  in pre_syscall()
313 				 * syscall handler after we return.  For  in pre_syscall()
332 	 * lwp_arg for post-syscall processing, regardless of whether  in pre_syscall()
353 	 * begin auditing for this syscall if the c2audit module is loaded  in pre_syscall()
374 		TNF_PROBE_1(syscall_start, "syscall thread", /* CSTYLED */,  in pre_syscall()
416 	 * If there was a continuing reason for pre-syscall processing,  in pre_syscall()
428  * Post-syscall processing.  Perform abnormal system call completion
432  * Any condition requiring pre-syscall handling must set one of these.
455 	 * forkall().  In these LWPs, skip most of post-syscall activity.  in post_syscall()
463 	 * amd64 syscall interface has not.  in post_syscall()
471 	/* put out audit record for this syscall */  in post_syscall()
603 		 * syscall.  in post_syscall()
607 		 * If a single-step trap occurred on a syscall (see trap())  in post_syscall()
652 		 * syscall failed after creating the LWP.  in post_syscall()
676 		 * delivered *during* the syscall, then re-enable the  in post_syscall()
705 		TNF_PROBE_3(syscall_end, "syscall thread", /* CSTYLED */,  in post_syscall()
751 		 * pointer so the next syscall will have the right  in post_syscall()
757 		lwp->lwp_ap = NULL;	/* reset on every syscall entry */  in post_syscall()
764 	 * If there was a continuing reason for post-syscall processing,  in post_syscall()
878 	 * Need space on the stack to store syscall arguments.  in dosyscall()
889 	CPU_STATS_ADDQ(CPU, sys, syscall, 1);  in dosyscall()
1015 		nargs = 0;		/* illegal syscall */  in save_syscall_args()
1131 	 * syscall.  in lock_syscall()
1174  * Loadable syscall support.
1177  *	Later, if the syscall is not unloadable, it could patch the vector.
1202 	 * we've locked either the loaded syscall or nosys  in loadable_syscall()
1235  * Indirect syscall handled in libc on x86 architectures
1259  * set_proc_pre_sys - Set pre-syscall processing for entire process.
1276  * set_proc_post_sys - Set post-syscall processing for entire process.
1293  * set_proc_sys - Set pre- and post-syscall processing for entire process.
1311  * set_all_proc_sys - set pre- and post-syscall processing flags for all
1333  * set_all_zone_usr_proc_sys - set pre- and post-syscall processing flags for
1363 			 * Set pre- and post-syscall processing flags  in set_all_zone_usr_proc_sys()