c3fc9df84a
* Also change _orig to _intr for clarity
* Cleaned up {IPC,KER}VEC
* Renamed _minix_kernel_info_struct to get_minix_kerninfo
* Merged _senda.S into _ipc.S
* Moved into separate files get_minix_kerninfo and _do_kernel_call
* Adapted do_kernel_call to follow same _ convention as ipc functions
* Drop patches in libc/net/send.c and libc/include/namespace.h
Change-Id: If4ea21ecb65435170d7d87de6c826328e84c18d0
34 lines
895 B
C
34 lines
895 B
C
#include <sys/cdefs.h>
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#include <lib.h>
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#include "namespace.h"
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#include <string.h>
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#include <signal.h>
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#include <sys/signal.h>
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#ifdef __weak_alias
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__weak_alias(sigreturn, _sigreturn)
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#endif
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int sigreturn(scp)
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register struct sigcontext *scp;
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{
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sigset_t set;
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/* The message can't be on the stack, because the stack will vanish out
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* from under us. The send part of ipc_sendrec will succeed, but when
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* a message is sent to restart the current process, who knows what will
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* be in the place formerly occupied by the message?
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*/
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static message m;
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/* Protect against race conditions by blocking all interrupts. */
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sigfillset(&set); /* splhi */
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sigprocmask(SIG_SETMASK, &set, (sigset_t *) NULL);
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memset(&m, 0, sizeof(m));
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m.PM_SIG_SET = scp->sc_mask;
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m.PM_SIG_CTX = (char *) scp;
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return(_syscall(PM_PROC_NR, PM_SIGRETURN, &m)); /* normally doesn't return */
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}
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