Date: Thu, 12 Oct 2000 20:56:45 -0700 From: John DeBoskey <jwd@FreeBSD.org> To: freebsd-current@FreeBSD.org Subject: Review: ptrace doc update / minor code question-correction Message-ID: <20001012205644.B95681@FreeBSD.org>
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Hi, I've been working with ptrace() and thought I'd take the time to make a minor update to the man page: Index: ptrace.2 =================================================================== RCS file: /home/ncvs/src/lib/libc/sys/ptrace.2,v retrieving revision 1.14 diff -u -r1.14 ptrace.2 --- ptrace.2 2000/05/04 13:09:15 1.14 +++ ptrace.2 2000/10/13 03:39:46 @@ -143,6 +143,13 @@ .Fa data provides a signal number to be delivered to the traced process as it resumes execution, or 0 if no signal is to be sent. +.It Dv PT_STEP +The traced process is single stepped one instruction. +The +.Fa addr +and +.Fa data +fields are not used. .It Dv PT_KILL The traced process terminates, as if .Dv PT_CONTINUE @@ -306,7 +313,9 @@ .Xr execve 2 , .Xr sigaction 2 , .Xr wait 2 , -.Xr execv 3 +.Xr execv 3 , +.Xr i386_clr_watch 3 , +.Xr i386_set_watch 3 .Sh HISTORY A .Fn ptrace Also, in looking at the ptrace code, I'd like to make the following minor change to remove a bogus parameter check: Index: sys_process.c =================================================================== RCS file: /home/ncvs/src/sys/kern/sys_process.c,v retrieving revision 1.52 diff -u -r1.52 sys_process.c --- sys_process.c 2000/08/30 04:49:07 1.52 +++ sys_process.c 2000/10/13 03:52:03 @@ -322,7 +322,7 @@ case PT_STEP: case PT_CONTINUE: case PT_DETACH: - if ((unsigned)uap->data >= NSIG) + if ((uap->req != PT_STEP) && ((unsigned)uap->data >= NSIG)) return EINVAL; PHOLD(p); Comments welcome! Thanks, John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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