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Adding reply phase to pager_sys_open()

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So that open() errors on pager's side can be noticed by vfs.
This commit is contained in:
Bahadir Balban
2008-04-21 15:30:40 +01:00
parent a674cf2b27
commit 80470e2581
3 changed files with 34 additions and 14 deletions
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16
tasks/fs0/src/syscalls.c
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@@ -35,11 +35,18 @@ int pager_sys_open(l4id_t sender, int fd, unsigned long vnum, unsigned long size
write_mr(L4SYS_ARG2, vnum);
write_mr(L4SYS_ARG3, size);
if ((err = l4_send(PAGER_TID, L4_IPC_TAG_PAGER_OPEN)) < 0) {
/* Tell pager about open request. Check ipc error. */
if ((err = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_PAGER_OPEN)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, err);
return err;
}
/* Check if syscall itself was successful */
if ((err = l4_get_retval()) < 0) {
printf("%s: Pager open Error: %d.\n", __FUNCTION__, fd);
return err;
}
return 0;
}
@@ -94,7 +101,7 @@ int sys_open(l4id_t sender, const char *pathname, int flags, unsigned int mode)
struct vnode *v;
struct tcb *task;
int fd;
int retval;
int retval, err;
/* Get the task */
BUG_ON(!(task = find_task(sender)));
@@ -131,7 +138,10 @@ int sys_open(l4id_t sender, const char *pathname, int flags, unsigned int mode)
task->fd[fd] = v->vnum;
/* Tell the pager about opened vnode information */
BUG_ON(pager_sys_open(sender, fd, v->vnum, v->size) < 0);
if ((err = pager_sys_open(sender, fd, v->vnum, v->size)) < 0) {
retval = err;
goto out;
}
out:
pathdata_destroy(pdata);