From c348f82e29356fc95dcb6331b4860b2d76fa07aa Mon Sep 17 00:00:00 2001 From: Rob Pike Date: Thu, 12 Jun 2008 13:26:16 -0700 Subject: import the plan 9 libraries libc (lib9) and libbio into the tree. remove the dependency on /home/r. SVN=122482 --- src/lib9/execl.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 src/lib9/execl.c (limited to 'src/lib9/execl.c') diff --git a/src/lib9/execl.c b/src/lib9/execl.c new file mode 100644 index 000000000..9e42ad34b --- /dev/null +++ b/src/lib9/execl.c @@ -0,0 +1,53 @@ +/* +Plan 9 from User Space src/lib9/execl.c +http://code.swtch.com/plan9port/src/tip/src/lib9/execl.c + +Copyright 2001-2007 Russ Cox. All Rights Reserved. + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ +#include +#include + +int +execl(char *prog, ...) +{ + int i; + va_list arg; + char **argv; + + va_start(arg, prog); + for(i=0; va_arg(arg, char*) != nil; i++) + ; + va_end(arg); + + argv = malloc((i+1)*sizeof(char*)); + if(argv == nil) + return -1; + + va_start(arg, prog); + for(i=0; (argv[i] = va_arg(arg, char*)) != nil; i++) + ; + va_end(arg); + + exec(prog, argv); + free(argv); + return -1; +} + -- cgit v1.2.3