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Added ipc to notify vfs about a forked child.

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TODO: Need to ensure child shmat()s its own utcb
after a fork (possibly in libposix/fork.c)
This commit is contained in:
Bahadir Balban
2008-08-22 00:11:06 +03:00
parent 3ce220f062
commit 1d15821acb
10 changed files with 139 additions and 44 deletions
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8
tasks/fs0/include/lib/idpool.h
View File

@@ -8,6 +8,14 @@ struct id_pool {
u32 bitmap[];
};
/* Copy one id pool to another by calculating its size */
static inline void id_pool_copy(struct idpool *to, struct idpool *from, int totalbits)
{
int nwords = BITWISE_GETWORD(totalbits);
memcpy(to, from, nwords * SZ_WORD + sizeof(struct id_pool));
}
struct id_pool *id_pool_new_init(int mapsize);
int id_new(struct id_pool *pool);
int id_del(struct id_pool *pool, int id);

11
tasks/fs0/include/task.h
View File

@@ -24,6 +24,17 @@ struct tcb {
struct vnode *rootdir;
};
/* Structures used when receiving new task info from pager */
struct task_data {
unsigned long tid;
unsigned long utcb_address;
};
struct task_data_head {
unsigned long total;
struct task_data tdata[];
};
static inline int task_is_utcb_mapped(struct tcb *t)
{
return t->utcb_mapped;