24ec0d73b5
- introduce new call numbers, names, and field aliases; - initialize request messages to zero for all ABI calls; - format callnr.h in the same way as com.h; - redo call tables in both servers; - remove param.h namespace pollution in the servers; - make brk(2) go to VM directly, rather than through PM; - remove obsolete BRK, UTIME, and WAIT calls; - clean up path copying routine in VFS; - move remaining system calls from libminlib to libc; - correct some errno-related mistakes in libc routines. Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
34 lines
891 B
C
34 lines
891 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 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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