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
30 lines
680 B
C
30 lines
680 B
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#include <lib.h>
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#include <string.h>
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#include <sys/ptrace.h>
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#ifdef __weak_alias
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__weak_alias(ptrace, _ptrace)
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#endif
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long ptrace(int req, pid_t pid, long addr, long data)
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{
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message m;
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memset(&m, 0, sizeof(m));
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m.PM_PTRACE_PID = pid;
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m.PM_PTRACE_REQ = req;
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m.PM_PTRACE_ADDR = addr;
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m.PM_PTRACE_DATA = data;
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if (_syscall(PM_PROC_NR, PM_PTRACE, &m) < 0) return(-1);
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/* There was no error, but -1 is a legal return value. Clear errno if
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* necessary to distinguish this case. _syscall has set errno to nonzero
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* for the error case.
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*/
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if (m.PM_PTRACE_DATA == -1) errno = 0;
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return(m.PM_PTRACE_DATA);
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}
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