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54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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Plan 9 from User Space src/lib9/execl.c
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http://code.swtch.com/plan9port/src/tip/src/lib9/execl.c
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Copyright 2001-2007 Russ Cox. All Rights Reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <u.h>
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#include <libc.h>
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int
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execl(char *prog, ...)
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{
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int i;
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va_list arg;
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char **argv;
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va_start(arg, prog);
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for(i=0; va_arg(arg, char*) != nil; i++)
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;
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va_end(arg);
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argv = malloc((i+1)*sizeof(char*));
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if(argv == nil)
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return -1;
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va_start(arg, prog);
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for(i=0; (argv[i] = va_arg(arg, char*)) != nil; i++)
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;
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va_end(arg);
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exec(prog, argv);
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free(argv);
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return -1;
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}
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