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42 lines
993 B
42 lines
993 B
/* See LICENSE file for copyright and license details. */ |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#include <stdlib.h> |
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#if !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) |
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#include <pty.h> |
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#endif |
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extern int ptm, pts; |
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void |
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getpty(void) { |
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char *ptsdev; |
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#if defined(_GNU_SOURCE) |
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ptm = getpt(); |
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#elif _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 |
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ptm = posix_openpt(O_RDWR); |
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#else |
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ptm = open("/dev/ptmx", O_RDWR); |
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if(ptm == -1) |
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if(openpty(&ptm, &pts, NULL, NULL, NULL) == -1) |
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err(EXIT_FAILURE, "cannot open pty"); |
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#endif |
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#if defined(_XOPEN_SOURCE) |
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if(ptm != -1) { |
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if(grantpt(ptm) == -1) |
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err(EXIT_FAILURE, "cannot grant access to pty"); |
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if(unlockpt(ptm) == -1) |
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err(EXIT_FAILURE, "cannot unlock pty"); |
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ptsdev = ptsname(ptm); |
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if(!ptsdev) |
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err(EXIT_FAILURE, "slave pty name undefined"); |
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pts = open(ptsdev, O_RDWR); |
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if(pts == -1) |
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err(EXIT_FAILURE, "cannot open slave pty"); |
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} |
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else |
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err(EXIT_FAILURE, "cannot open pty"); |
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#endif |
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}
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