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https://sourceware.org/git/binutils-gdb.git
synced 2025-02-11 13:02:10 +08:00
1368b914e9
Now that all port tests live under testsuite/sim/*/, and none live in testsuite/ directly, flatten the structure by moving all of the dirs under testsuite/sim/ to testsuite/ directly. We need to stop passing --tool to dejagnu so that it searches all dirs and not just ones that start with "sim". Since we have no other dirs in this tree, and no plans to add any, should be fine.
112 lines
2.0 KiB
C
112 lines
2.0 KiB
C
/* Check that writing an inordinate amount of data works (somewhat).
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#notarget: cris*-*-elf
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#output: got: a\nexit: 0\n
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This test-case will *not* work on host (or for real): the first
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pipemax+1 bytes will be successfully written. It's just for
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exercising a rare execution path. */
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <limits.h>
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#include <unistd.h>
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#include <sched.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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int pip[2];
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int pipemax;
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int
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process (void *arg)
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{
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char *s = arg;
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char *buf = calloc (pipemax * 100, 1);
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int ret;
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if (buf == NULL)
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abort ();
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*buf = *s;
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ret = write (pip[1], buf, pipemax * 100);
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if (ret != -1 || errno != EFBIG)
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{
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perror ("write");
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abort ();
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}
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return 0;
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}
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int
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main (void)
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{
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int retcode;
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int pid;
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int st = 0;
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long stack[16384];
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char buf[1];
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retcode = pipe (pip);
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if (retcode != 0)
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{
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fprintf (stderr, "Bad pipe %d\n", retcode);
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abort ();
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}
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#ifdef PIPE_MAX
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pipemax = PIPE_MAX;
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#else
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pipemax = fpathconf (pip[1], _PC_PIPE_BUF);
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#endif
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if (pipemax <= 0)
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{
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fprintf (stderr, "Bad pipemax %d\n", pipemax);
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abort ();
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}
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pid = clone (process, (char *) stack + sizeof (stack) - 64,
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(CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
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| SIGCHLD, "ab");
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if (pid <= 0)
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{
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fprintf (stderr, "Bad clone %d\n", pid);
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abort ();
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}
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while ((retcode = read (pip[0], buf, 1)) == 0)
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;
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if (retcode != 1)
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{
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fprintf (stderr, "Bad read 1: %d\n", retcode);
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abort ();
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}
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printf ("got: %c\n", buf[0]);
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if (close (pip[0]) != 0)
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{
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perror ("pip close");
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abort ();
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}
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retcode = waitpid (pid, &st, __WALL);
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if (retcode != pid || !WIFEXITED (st))
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{
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fprintf (stderr, "Bad wait %d:%d %x\n", pid, retcode, st);
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perror ("errno");
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abort ();
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}
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printf ("exit: %d\n", WEXITSTATUS (st));
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return 0;
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}
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