diff options
Diffstat (limited to 'private/crt32/exec/execle.c')
-rw-r--r-- | private/crt32/exec/execle.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/private/crt32/exec/execle.c b/private/crt32/exec/execle.c new file mode 100644 index 000000000..2b74e4d31 --- /dev/null +++ b/private/crt32/exec/execle.c @@ -0,0 +1,79 @@ +/*** +*execle.c - execute a file with arg list and environment +* +* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved. +* +*Purpose: +* defines _execle() - execute a file +* +*Revision History: +* 10-14-83 RN written +* 12-11-87 JCR Added "_LOAD_DS" to declaration +* 11-20-89 GJF Fixed copyright, indents. Added const attribute to +* types of filename and arglist. #include-d PROCESS.H +* and added ellipsis to match prototype. +* 03-08-90 GJF Replaced _LOAD_DS with _CALLTYPE2, added #include +* <cruntime.h> and removed #include <register.h> +* 07-24-90 SBM Removed redundant includes, replaced <assertm.h> by +* <assert.h> +* 09-27-90 GJF New-style function declarator. +* 01-17-91 GJF ANSI naming. +* 07-16-93 SRW ALPHA Merge +* +*******************************************************************************/ + +#include <cruntime.h> +#include <assert.h> +#include <stddef.h> +#include <process.h> +#include <stdarg.h> +#include <internal.h> +#include <malloc.h> + +/*** +*int _execle(filename, arglist) - execute a file +* +*Purpose: +* Execute the given file (overlays the calling process). +* We must dig the environment vector out of the stack and pass it +* and address of argument vector to execve. +* +*Entry: +* char *filename - file to execute +* char *arglist - argument list followed by environment +* should be called like _execle(path, arg0, arg1, ..., argn, NULL, envp); +* +*Exit: +* destroys calling process (hopefully) +* if fails, returns -1. +* +*Exceptions: +* +*******************************************************************************/ + +int _CALLTYPE2 _execle ( + const char *filename, + const char *arglist, + ... + ) +{ + va_list vargs; + char * argbuf[64]; + char ** argv; + char ** envp; + int result; + + assert(filename != NULL); + assert(*filename != '\0'); + assert(arglist != NULL); + assert(*arglist != '\0'); + + va_start(vargs, arglist); + argv = _capture_argv(&vargs, arglist, argbuf, 64); + envp = va_arg(vargs, char **); + va_end(vargs); + + result = _execve(filename,argv,envp); + if (argv && argv != argbuf) free(argv); + return result; +} |