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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 16:44:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 16:44:12 +0000 |
commit | cda5d340e78555d2542be9264137319c5308e798 (patch) | |
tree | 7bc11f3311859ceee697bba8b60a5cb79a03473b /lib/replace/tests/shared_mremap.c | |
parent | Initial commit. (diff) | |
download | talloc-upstream.tar.xz talloc-upstream.zip |
Adding upstream version 2.4.2.upstream/2.4.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/replace/tests/shared_mremap.c')
-rw-r--r-- | lib/replace/tests/shared_mremap.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/replace/tests/shared_mremap.c b/lib/replace/tests/shared_mremap.c new file mode 100644 index 0000000..08040e2 --- /dev/null +++ b/lib/replace/tests/shared_mremap.c @@ -0,0 +1,51 @@ +/* this tests whether we can use mremap */ + +#if defined(HAVE_UNISTD_H) +#include <unistd.h> +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#include <sys/mman.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#define DATA "conftest.mmap" + +#ifndef MAP_FILE +#define MAP_FILE 0 +#endif + +#ifndef MAP_FAILED +#define MAP_FAILED (int *)-1 +#endif + +int main(void) +{ + int *buf; + int fd; + int err = 1; + + fd = open(DATA, O_RDWR|O_CREAT|O_TRUNC, 0666); + if (fd == -1) { + exit(1); + } + + buf = (int *)mmap(NULL, 0x1000, PROT_READ | PROT_WRITE, + MAP_FILE | MAP_SHARED, fd, 0); + if (buf == MAP_FAILED) { + goto done; + } + + buf = mremap(buf, 0x1000, 0x2000, MREMAP_MAYMOVE); + if (buf == MAP_FAILED) { + goto done; + } + + err = 0; +done: + close(fd); + unlink(DATA); + exit(err); +} |