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-rw-r--r--usertests.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/usertests.c b/usertests.c
index c3e9113..20155c2 100644
--- a/usertests.c
+++ b/usertests.c
@@ -115,305 +115,11 @@ exitwait(void)
puts("exitwait ok\n");
}
-// two processes write to the same file descriptor
-// is the offset shared? does inode locking work?
-void
-sharedfd()
-{
- int fd, pid, i, n, nc, np;
- char buf[10];
-
- unlink("sharedfd");
- fd = open("sharedfd", O_CREATE|O_RDWR);
- if(fd < 0){
- printf(1, "usertests: cannot open sharedfd for writing");
- return;
- }
- pid = fork();
- memset(buf, pid==0?'c':'p', sizeof(buf));
- for(i = 0; i < 100; i++){
- if(write(fd, buf, sizeof(buf)) != sizeof(buf)){
- printf(1, "usertests: write sharedfd failed\n");
- break;
- }
- }
- if(pid == 0)
- exit();
- else
- wait();
- close(fd);
- fd = open("sharedfd", 0);
- if(fd < 0){
- printf(1, "usertests: cannot open sharedfd for reading\n");
- return;
- }
- nc = np = 0;
- while((n = read(fd, buf, sizeof(buf))) > 0){
- for(i = 0; i < sizeof(buf); i++){
- if(buf[i] == 'c')
- nc++;
- if(buf[i] == 'p')
- np++;
- }
- }
- close(fd);
- unlink("sharedfd");
- if(nc == 1000 && np == 1000)
- printf(1, "sharedfd ok\n");
- else
- printf(1, "sharedfd oops %d %d\n", nc, np);
-}
-
-// two processes write two different files at the same
-// time, to test block allocation.
-void
-twofiles()
-{
- int fd, pid, i, j, n, total;
- char *fname;
-
- unlink("f1");
- unlink("f2");
-
- pid = fork();
- if(pid < 0){
- puts("fork failed\n");
- return;
- }
-
- fname = pid ? "f1" : "f2";
- fd = open(fname, O_CREATE | O_RDWR);
- if(fd < 0){
- puts("create failed\n");
- exit();
- }
-
- memset(buf, pid?'p':'c', 512);
- for(i = 0; i < 12; i++){
- if((n = write(fd, buf, 500)) != 500){
- printf(1, "write failed %d\n", n);
- exit();
- }
- }
- close(fd);
- if(pid)
- wait();
- else
- exit();
-
- for(i = 0; i < 2; i++){
- fd = open(i?"f1":"f2", 0);
- total = 0;
- while((n = read(fd, buf, sizeof(buf))) > 0){
- for(j = 0; j < n; j++){
- if(buf[j] != (i?'p':'c')){
- puts("wrong char\n");
- exit();
- }
- }
- total += n;
- }
- close(fd);
- if(total != 12*500){
- printf(1, "wrong length %d\n", total);
- exit();
- }
- }
-
- unlink("f1");
- unlink("f2");
-
- puts("twofiles ok\n");
-}
-
-// two processes create and delete files in same directory
-void
-createdelete()
-{
- int pid, i, fd;
- int n = 20;
- char name[32];
-
- pid = fork();
- if(pid < 0){
- puts("fork failed\n");
- exit();
- }
-
- name[0] = pid ? 'p' : 'c';
- name[2] = '\0';
- for(i = 0; i < n; i++){
- name[1] = '0' + i;
- fd = open(name, O_CREATE | O_RDWR);
- if(fd < 0){
- puts("create failed\n");
- exit();
- }
- close(fd);
- if(i > 0 && (i % 2 ) == 0){
- name[1] = '0' + (i / 2);
- if(unlink(name) < 0){
- puts("unlink failed\n");
- exit();
- }
- }
- }
-
- if(pid)
- wait();
- else
- exit();
-
- for(i = 0; i < n; i++){
- name[0] = 'p';
- name[1] = '0' + i;
- fd = open(name, 0);
- if((i == 0 || i >= n/2) && fd < 0){
- printf(1, "oops createdelete %s didn't exist\n", name);
- } else if((i >= 1 && i < n/2) && fd >= 0){
- printf(1, "oops createdelete %s did exist\n", name);
- }
- if(fd >= 0)
- close(fd);
-
- name[0] = 'c';
- name[1] = '0' + i;
- fd = open(name, 0);
- if((i == 0 || i >= n/2) && fd < 0){
- printf(1, "oops createdelete %s didn't exist\n", name);
- } else if((i >= 1 && i < n/2) && fd >= 0){
- printf(1, "oops createdelete %s did exist\n", name);
- }
- if(fd >= 0)
- close(fd);
- }
-
- for(i = 0; i < n; i++){
- name[0] = 'p';
- name[1] = '0' + i;
- unlink(name);
- name[0] = 'c';
- unlink(name);
- }
-
- printf(1, "createdelete ok\n");
-}
-
-// can I unlink a file and still read it?
-void
-unlinkread()
-{
- int fd, fd1;
-
- fd = open("unlinkread", O_CREATE | O_RDWR);
- if(fd < 0){
- puts("create unlinkread failed\n");
- exit();
- }
- write(fd, "hello", 5);
- close(fd);
-
- fd = open("unlinkread", O_RDWR);
- if(fd < 0){
- puts("open unlinkread failed\n");
- exit();
- }
- if(unlink("unlinkread") != 0){
- puts("unlink unlinkread failed\n");
- exit();
- }
-
- fd1 = open("xxx", O_CREATE | O_RDWR);
- write(fd1, "yyy", 3);
- close(fd1);
-
- if(read(fd, buf, sizeof(buf)) != 5){
- puts("unlinkread read failed");
- exit();
- }
- if(buf[0] != 'h'){
- puts("unlinkread wrong data\n");
- exit();
- }
- if(write(fd, buf, 10) != 10){
- puts("unlinkread write failed\n");
- exit();
- }
- close(fd);
- unlink("xxx");
- puts("unlinkread ok\n");
-}
-
-void
-linktest()
-{
- int fd;
-
- unlink("lf1");
- unlink("lf2");
-
- fd = open("lf1", O_CREATE|O_RDWR);
- if(fd < 0){
- puts("create lf1 failed\n");
- exit();
- }
- if(write(fd, "hello", 5) != 5){
- puts("write lf1 failed\n");
- exit();
- }
- close(fd);
-
- if(link("lf1", "lf2") < 0){
- puts("link lf1 lf2 failed\n");
- exit();
- }
- unlink("lf1");
-
- if(open("lf1", 0) >= 0){
- puts("unlinked lf1 but it is still there!\n");
- exit();
- }
-
- fd = open("lf2", 0);
- if(fd < 0){
- puts("open lf2 failed\n");
- exit();
- }
- if(read(fd, buf, sizeof(buf)) != 5){
- puts("read lf2 failed\n");
- exit();
- }
- close(fd);
-
- if(link("lf2", "lf2") >= 0){
- puts("link lf2 lf2 succeeded! oops\n");
- exit();
- }
-
- unlink("lf2");
- if(link("lf2", "lf1") >= 0){
- puts("link non-existant succeeded! oops\n");
- exit();
- }
-
- if(link(".", "lf1") >= 0){
- puts("link . lf1 succeeded! oops\n");
- exit();
- }
-
- puts("linktest ok\n");
-}
-
int
main(int argc, char *argv[])
{
puts("usertests starting\n");
- linktest();
- unlinkread();
- createdelete();
- twofiles();
- sharedfd();
pipe1();
preempt();
exitwait();
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