diff options
| author | Robert Morris <rtm@csail.mit.edu> | 2010-09-20 06:00:22 -0400 |
|---|---|---|
| committer | Robert Morris <rtm@csail.mit.edu> | 2010-09-20 06:00:22 -0400 |
| commit | a9183883b88bfccd1c6a62e27621b2c892d50b67 (patch) | |
| tree | 5cae8d40cf5e91ea52d7aeb281e3baf5828c45e0 /usertests.c | |
| parent | 26d11ee8dc60fed78c8b34d15670eb6640d92129 (diff) | |
| download | xv6-labs-a9183883b88bfccd1c6a62e27621b2c892d50b67.tar.gz xv6-labs-a9183883b88bfccd1c6a62e27621b2c892d50b67.tar.bz2 xv6-labs-a9183883b88bfccd1c6a62e27621b2c892d50b67.zip | |
map kernel instructions r/o
Diffstat (limited to 'usertests.c')
| -rw-r--r-- | usertests.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/usertests.c b/usertests.c index e62703d..177ffba 100644 --- a/usertests.c +++ b/usertests.c @@ -1419,6 +1419,7 @@ validatetest(void) printf(stdout, "validate ok\n"); } +// does unintialized data start out zero? char uninit[10000]; void bsstest(void) @@ -1434,6 +1435,32 @@ bsstest(void) printf(stdout, "bss test ok\n"); } +// does exec do something sensible if the arguments +// are larger than a page? +void +bigargtest(void) +{ + int pid, ppid; + + ppid = getpid(); + pid = fork(); + if(pid == 0){ + char *args[100]; + int i; + for(i = 0; i < 99; i++) + args[i] = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; + args[99] = 0; + printf(stdout, "bigarg test\n"); + exec("echo", args); + printf(stdout, "bigarg test ok\n"); + exit(); + } else if(pid < 0){ + printf(stdout, "bigargtest: fork failed\n"); + exit(); + } + wait(); +} + int main(int argc, char *argv[]) { @@ -1445,6 +1472,7 @@ main(int argc, char *argv[]) } close(open("usertests.ran", O_CREATE)); + // bigargtest(); bsstest(); sbrktest(); validatetest(); |