35 lines
928 B
C
35 lines
928 B
C
#include <errno.h> /* EACCESS, ELOOP, ENAMETOOLONG, ENOENT, ENOTDIR, errno */
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#include <stdio.h> /* fprintf(3) */
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#include <stdlib.h> /* stderr */
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#include <string.h> /* strerror(3) */
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#include <sysexits.h> /* EX_OSERR, EX_NOPERM, EX_NOINPUT, EX_UNAVAILABLE,
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* EX_USAGE */
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#include <unistd.h> /* chdir(2) */
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static char *program_name = "pschdir";
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int main(int argc, char *argv[]){
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if(argc < 3){
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fprintf(stderr,
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"Usage: %s [directory] [command (argument...)]\n",
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argv[0] == NULL ? program_name : argv[0]);
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return EX_USAGE;
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}
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if(chdir(argv[1]) != 0){
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fprintf(stderr, "%s: %s: %s\n", argv[0], argv[1],
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strerror(errno));
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switch(errno){
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case EACCES: return EX_NOPERM;
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case ELOOP: return EX_UNAVAILABLE;
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case ENAMETOOLONG: return EX_OSERR;
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case ENOENT: return EX_NOINPUT;
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case ENOTDIR: return EX_NOINPUT;
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default: return EX_UNAVAILABLE;
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}
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}
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execvp(argv[2], argv + 2);
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}
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