int system_main(int ac,const char *av[]) { const char *nav[256]; /**/ CStr(nab,0x10000); int nac,ai; if( File_is(av[1]) /* should search in PATH ... */ ){ Execvp("system",av[1],&av[1]); }else{ nac = decomp_args(nav,256,av[1],AVStr(nab)); for( ai = 2; ai < ac; ai++ ){ if( elnumof(nav)-1 <= nac) break; nav[nac++] = av[ai]; } nav[nac] = 0; Execvp("system",nav[0],nav); } return 0; }
void cmd_exe(char **args){ int pid; int status; if((pid = Fork()) == 0){ Execvp(args[0], args); } else { wait(&status); if (status == 0){ printf("[ishell: program terminated successfully]\n"); } } }
static int xioopen_exec(int argc, const char *argv[], struct opt *opts, int xioflags, /* XIO_RDONLY, XIO_MAYCHILD etc. */ xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3 ) { int status; bool dash = false; int duptostderr; if (argc != 2) { Error3("\"%s:%s\": wrong number of parameters (%d instead of 1)", argv[0], argv[1], argc-1); } retropt_bool(opts, OPT_DASH, &dash); status = _xioopen_foxec(xioflags, &fd->stream, groups, &opts, &duptostderr); if (status < 0) return status; if (status == 0) { /* child */ const char *ends[] = { " ", NULL }; const char *hquotes[] = { "'", NULL }; const char *squotes[] = { "\"", NULL }; const char *nests[] = { "'", "'", "(", ")", "[", "]", "{", "}", NULL } ; char **pargv = NULL; int pargc; size_t len; const char *strp; char *token; /*! */ char *tokp; char *path = NULL; char *tmp; int numleft; /*! Close(something) */ /* parse command line */ Debug1("child: args = \"%s\"", argv[1]); pargv = Malloc(8*sizeof(char *)); if (pargv == NULL) return STAT_RETRYLATER; len = strlen(argv[1])+1; strp = argv[1]; token = Malloc(len); /*! */ tokp = token; if (nestlex(&strp, &tokp, &len, ends, hquotes, squotes, nests, true, true, false) < 0) { Error("internal: miscalculated string lengths"); } *tokp++ = '\0'; pargv[0] = strrchr(tokp-1, '/'); if (pargv[0] == NULL) pargv[0] = token; else ++pargv[0]; pargc = 1; while (*strp == ' ') { while (*++strp == ' ') ; if ((pargc & 0x07) == 0) { pargv = Realloc(pargv, (pargc+8)*sizeof(char *)); if (pargv == NULL) return STAT_RETRYLATER; } pargv[pargc++] = tokp; if (nestlex(&strp, &tokp, &len, ends, hquotes, squotes, nests, true, true, false) < 0) { Error("internal: miscalculated string lengths"); } *tokp++ = '\0'; } pargv[pargc] = NULL; if ((tmp = Malloc(strlen(pargv[0])+2)) == NULL) { return STAT_RETRYLATER; } if (dash) { tmp[0] = '-'; strcpy(tmp+1, pargv[0]); } else { strcpy(tmp, pargv[0]); } pargv[0] = tmp; if (setopt_path(opts, &path) < 0) { /* this could be dangerous, so let us abort this child... */ Exit(1); } if ((numleft = leftopts(opts)) > 0) { Error1("%d option(s) could not be used", numleft); showleft(opts); return STAT_NORETRY; } /* only now redirect stderr */ if (duptostderr >= 0) { diag_dup(); Dup2(duptostderr, 2); } Notice1("execvp'ing \"%s\"", token); Execvp(token, pargv); /* here we come only if execvp() failed */ switch (pargc) { case 1: Error3("execvp(\"%s\", \"%s\"): %s", token, pargv[0], strerror(errno)); break; case 2: Error4("execvp(\"%s\", \"%s\", \"%s\"): %s", token, pargv[0], pargv[1], strerror(errno)); break; case 3: default: Error5("execvp(\"%s\", \"%s\", \"%s\", \"%s\", ...): %s", token, pargv[0], pargv[1], pargv[2], strerror(errno)); break; } Exit(1); /* this child process */ } /* parent */ return 0; }