52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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int main(int argc, char **argv) {
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int ptm;
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char ptsname[64];
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if ((ptm = open("/dev/ptmx", O_RDWR)) < 0) {
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fprintf(stderr, "%s: %s: %s: %s\n", argv[0], "open()", "/dev/ptmx", strerror(errno));
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goto error_open_ptmx;
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}
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if (grantpt(ptm) < 0) {
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fprintf(stderr, "%s: %s: %s\n", argv[0], "grantpt()", strerror(errno));
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goto error_grantpt_ptm;
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}
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if (unlockpt(ptm) < 0) {
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fprintf(stderr, "%s: %s: %s\n", argv[0], "unlockpt()", strerror(errno));
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goto error_unlockpt_ptm;
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}
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if (ptsname_r(ptm, ptsname, sizeof(ptsname)) < 0) {
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fprintf(stderr, "%s: %s: %s: %s\n", argv[0], "ptsname_r()", "/dev/ptmx", strerror(errno));
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goto error_ptsname_r_ptm;
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}
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printf("pts %s\n", ptsname);
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close(ptm);
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return 0;
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error_unlockpt_ptm:
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error_grantpt_ptm:
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error_ptsname_r_ptm:
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close(ptm);
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error_open_ptmx:
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return 127;
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}
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