ab917ae5af
* tests/dup.c: New file. * tests/dup.test: New test. * tests/dup2.c: New file. * tests/dup2.test: New test. * tests/dup3.c: New file. * tests/dup3.test: New test. * tests/.gitignore: Add dup, dup2, and dup3. * tests/Makefile.am (check_PROGRAMS): Likewise. (TESTS): Add dup.test, dup2.test, and dup3.test.
30 lines
604 B
C
30 lines
604 B
C
#include "tests.h"
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#include <fcntl.h>
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#include <sys/syscall.h>
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#if defined __NR_dup3 && defined O_CLOEXEC
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# include <errno.h>
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# include <stdio.h>
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# include <unistd.h>
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int
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main(void)
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{
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const long int fd_old = (long int) 0xdeadbeefffffffff;
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const long int fd_new = (long int) 0xdeadbeeffffffffe;
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int rc = syscall(__NR_dup3, fd_old, fd_new, O_CLOEXEC);
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printf("dup3(%d, %d, O_CLOEXEC) = %d %s (%m)\n",
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(int) fd_old, (int) fd_new, rc,
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errno == ENOSYS ? "ENOSYS" : "EBADF");
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_dup3 && && O_CLOEXEC")
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#endif
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