diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2018-07-30 14:43:21 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2018-07-31 09:57:25 +0200 |
| commit | 28cbb997d66e4d1904a231bef1ce15c2cbb6bf73 (patch) | |
| tree | 75608a631ef99025e7624b7b1d93c88a4e15bdf2 /tests | |
| parent | 38138fab93584ad3560ddfcd70efbd5bb6b4a6f0 (diff) | |
tests: add check_invalid_maps to test-mmap
This adds a test to make sure we fail properly for a 0 length mmap.
There are most likely other failure conditions we should also check.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: umarcor <1783362@bugs.launchpad.net>
Message-Id: <20180730134321.19898-3-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/tcg/multiarch/test-mmap.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/tests/tcg/multiarch/test-mmap.c b/tests/tcg/multiarch/test-mmap.c index 5c0afe6e49..11d0e777b1 100644 --- a/tests/tcg/multiarch/test-mmap.c +++ b/tests/tcg/multiarch/test-mmap.c @@ -27,7 +27,7 @@ #include <stdint.h> #include <string.h> #include <unistd.h> - +#include <errno.h> #include <sys/mman.h> #define D(x) @@ -435,6 +435,25 @@ void checked_write(int fd, const void *buf, size_t count) fail_unless(rc == count); } +void check_invalid_mmaps(void) +{ + unsigned char *addr; + + /* Attempt to map a zero length page. */ + addr = mmap(NULL, 0, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fprintf(stdout, "%s addr=%p", __func__, (void *)addr); + fail_unless(addr == MAP_FAILED); + fail_unless(errno == EINVAL); + + /* Attempt to map a over length page. */ + addr = mmap(NULL, -4, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fprintf(stdout, "%s addr=%p", __func__, (void *)addr); + fail_unless(addr == MAP_FAILED); + fail_unless(errno == ENOMEM); + + fprintf(stdout, " passed\n"); +} + int main(int argc, char **argv) { char tempname[] = "/tmp/.cmmapXXXXXX"; @@ -476,6 +495,7 @@ int main(int argc, char **argv) check_file_fixed_mmaps(); check_file_fixed_eof_mmaps(); check_file_unfixed_eof_mmaps(); + check_invalid_mmaps(); /* Fails at the moment. */ /* check_aligned_anonymous_fixed_mmaps_collide_with_host(); */ |