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Kernel+LibC: Add sys$waitid(), and make sys$waitpid() wrap it
sys$waitid() takes an explicit description of whether it's waiting for a single process with the given PID, all of the children, a group, etc., and returns its info as a siginfo_t. It also doesn't automatically imply WEXITED, which clears up the confusion in the kernel.
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5 changed files with 140 additions and 55 deletions
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@ -26,6 +26,7 @@
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#pragma once
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#include <signal.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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@ -35,7 +36,7 @@ __BEGIN_DECLS
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#define WSTOPSIG(status) WEXITSTATUS(status)
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#define WTERMSIG(status) ((status)&0x7f)
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#define WIFEXITED(status) (WTERMSIG(status) == 0)
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#define WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
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#define WIFSTOPPED(status) (((status)&0xff) == 0x7f)
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#define WIFSIGNALED(status) (((char)(((status)&0x7f) + 1) >> 1) > 0)
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#define WNOHANG 1
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@ -52,5 +53,6 @@ typedef enum {
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pid_t waitpid(pid_t, int* wstatus, int options);
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pid_t wait(int* wstatus);
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int waitid(idtype_t idtype, id_t id, siginfo_t* infop, int options);
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__END_DECLS
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