44 lines
960 B
C
44 lines
960 B
C
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "invoke.h"
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int invoke_command(char * const *argv, const char *input, int inputlen)
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{
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int res, fd[2], pid, wpid, wc, written, status;
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res = pipe(fd);
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if(res == -1)
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return -1;
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pid = fork();
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if(pid == -1) {
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close(fd[0]);
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close(fd[1]);
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return -1;
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}
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if(pid == 0) { /* child */
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close(fd[1]);
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dup2(fd[0], 0);
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close(fd[0]);
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execvp(*argv, argv);
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_exit(253);
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}
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close(fd[0]);
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written = 0;
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while(written < inputlen) {
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wc = write(fd[1], input + written, inputlen - written);
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if(wc == -1)
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break;
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written += wc;
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}
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close(fd[1]);
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do {
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wpid = wait(&status);
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} while(wpid != pid && wpid != -1 /* paranoia check */);
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if(!WIFEXITED(status) || WEXITSTATUS(status) != 0)
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return -2;
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return 0;
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}
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