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22 lines
302 B
C
22 lines
302 B
C
/* isatty.c */
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/* Dumb implementation so programs will at least run. */
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#include <sys/stat.h>
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#include <errno.h>
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int
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_isatty (int fd)
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{
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struct stat buf;
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if (fstat (fd, &buf) < 0) {
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errno = EBADF;
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return 0;
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}
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if (S_ISCHR (buf.st_mode))
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return 1;
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errno = ENOTTY;
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return 0;
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}
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