From owner-svn-src-head@FreeBSD.ORG Mon Dec 21 17:38:13 2009 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6308E10656A8; Mon, 21 Dec 2009 17:38:13 +0000 (UTC) (envelope-from jh@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 51E578FC0A; Mon, 21 Dec 2009 17:38:13 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id nBLHcDgR034835; Mon, 21 Dec 2009 17:38:13 GMT (envelope-from jh@svn.freebsd.org) Received: (from jh@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id nBLHcD82034831; Mon, 21 Dec 2009 17:38:13 GMT (envelope-from jh@svn.freebsd.org) Message-Id: <200912211738.nBLHcD82034831@svn.freebsd.org> From: Jaakko Heinonen Date: Mon, 21 Dec 2009 17:38:13 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r200780 - head/usr.bin/truss X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Dec 2009 17:38:13 -0000 Author: jh Date: Mon Dec 21 17:38:13 2009 New Revision: 200780 URL: http://svn.freebsd.org/changeset/base/200780 Log: Remove non-working special case for pipe(2) from amd64-fbsd32.c and i386-fbsd.c. Add pipe(2) to syscall table to decode it's pointer argument properly and re-add special handling for pipe(2) return value to print_syscall_ret(). PR: bin/120870 Approved by: trasz (mentor) Modified: head/usr.bin/truss/amd64-fbsd32.c head/usr.bin/truss/i386-fbsd.c head/usr.bin/truss/syscalls.c Modified: head/usr.bin/truss/amd64-fbsd32.c ============================================================================== --- head/usr.bin/truss/amd64-fbsd32.c Mon Dec 21 17:23:04 2009 (r200779) +++ head/usr.bin/truss/amd64-fbsd32.c Mon Dec 21 17:38:13 2009 (r200780) @@ -315,19 +315,6 @@ amd64_fbsd32_syscall_exit(struct trussin } } - /* - * The pipe syscall returns its fds in two registers and has assembly glue - * to provide the libc API, so it cannot be handled like regular syscalls. - * The nargs check is so we don't have to do yet another strcmp on every - * syscall. - */ - if (!errorp && fsc.nargs == 0 && fsc.name && strcmp(fsc.name, "pipe") == 0) { - fsc.nargs = 1; - fsc.s_args = malloc((1+fsc.nargs) * sizeof(char*)); - asprintf(&fsc.s_args[0], "[%d,%d]", (int)retval, (int)regs.r_rdx); - retval = 0; - } - if (fsc.name != NULL && (!strcmp(fsc.name, "freebsd32_execve") || !strcmp(fsc.name, "exit"))) { trussinfo->curthread->in_syscall = 1; Modified: head/usr.bin/truss/i386-fbsd.c ============================================================================== --- head/usr.bin/truss/i386-fbsd.c Mon Dec 21 17:23:04 2009 (r200779) +++ head/usr.bin/truss/i386-fbsd.c Mon Dec 21 17:38:13 2009 (r200780) @@ -305,19 +305,6 @@ i386_syscall_exit(struct trussinfo *trus } } - /* - * The pipe syscall returns its fds in two registers and has assembly glue - * to provide the libc API, so it cannot be handled like regular syscalls. - * The nargs check is so we don't have to do yet another strcmp on every - * syscall. - */ - if (!errorp && fsc.nargs == 0 && fsc.name && strcmp(fsc.name, "pipe") == 0) { - fsc.nargs = 1; - fsc.s_args = malloc((1+fsc.nargs) * sizeof(char*)); - asprintf(&fsc.s_args[0], "[%d,%d]", (int)retval, regs.r_edx); - retval = 0; - } - if (fsc.name != NULL && (!strcmp(fsc.name, "execve") || !strcmp(fsc.name, "exit"))) { trussinfo->curthread->in_syscall = 1; Modified: head/usr.bin/truss/syscalls.c ============================================================================== --- head/usr.bin/truss/syscalls.c Mon Dec 21 17:23:04 2009 (r200779) +++ head/usr.bin/truss/syscalls.c Mon Dec 21 17:38:13 2009 (r200780) @@ -242,6 +242,8 @@ struct syscall syscalls[] = { .args = { { Name | IN, 0 }, { Hex, 1 } } }, { .name = "pathconf", .ret_type = 1, .nargs = 2, .args = { { Name | IN, 0 }, { Pathconf, 1 } } }, + { .name = "pipe", .ret_type = 1, .nargs = 1, + .args = { { Ptr, 0 } } }, { .name = "truncate", .ret_type = 1, .nargs = 3, .args = { { Name | IN, 0 }, { Int | IN, 1 }, { Quad | IN, 2 } } }, { .name = "ftruncate", .ret_type = 1, .nargs = 3, @@ -1137,6 +1139,12 @@ print_syscall_ret(struct trussinfo *trus if (errorp) { fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval, strerror(retval)); } else { + /* + * Because pipe(2) has a special assembly glue to provide the + * libc API, we have to adjust retval. + */ + if (name != NULL && !strcmp(name, "pipe")) + retval = 0; fprintf(trussinfo->outfile, " = %ld (0x%lx)\n", retval, retval); } }