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1214c97666
We usually test against the newlib/libgloss environment, but for a few ports that also support Linux apps, we want to test that logic too. A lot of the C code is written such that it works with either newlib/libgloss or glibc/linux toolchains, but we have some tests that end up being Linux-specific. Cris has been using the target tuple as a rough proxy for this (where cris*-*-elf is assumed to be newlib/libgloss, and everything else is glibc/linux), but that is a bit too rough, and it doesn't work in a multitarget build. So lets create a few stub files that we can do compile tests with to detect the different setups, and then let tests declare which one they require (if they require any at all).
112 lines
1.9 KiB
C
112 lines
1.9 KiB
C
/* Check that writing an inordinate amount of data works (somewhat).
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#progos: linux
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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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