30 lines
630 B
C
30 lines
630 B
C
#include <sys/ptrace.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include "syscall.h"
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long ptrace(int req, ...)
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{
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va_list ap;
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pid_t pid;
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void *addr, *data, *addr2 = 0;
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long ret, result;
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va_start(ap, req);
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pid = va_arg(ap, pid_t);
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addr = va_arg(ap, void *);
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data = va_arg(ap, void *);
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/* PTRACE_{READ,WRITE}{DATA,TEXT} (16...19) are specific to SPARC. */
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#ifdef PTRACE_READDATA
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if ((unsigned)req - PTRACE_READDATA < 4)
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addr2 = va_arg(ap, void *);
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#endif
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va_end(ap);
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if (req-1U < 3) data = &result;
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ret = syscall(SYS_ptrace, req, pid, addr, data, addr2);
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if (ret < 0 || req-1U >= 3) return ret;
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return result;
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}
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