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fix lib/fork.c a warning

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This commit is contained in:
DeSmooth
2021-05-08 11:25:07 +08:00
parent c7a127d6f8
commit d369ad2d63
1 changed files with 7 additions and 7 deletions
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14
lab/lib/fork.c
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@@ -149,15 +149,15 @@ fork(void)
// alloc a page and map child exception stack
if ((r = sys_page_alloc(envid, (void *)(UXSTACKTOP-PGSIZE), PTE_U | PTE_P | PTE_W)) < 0)
return r;
extern void _pgfault_upcall(void);
if ((r = sys_env_set_pgfault_upcall(envid, _pgfault_upcall)) < 0)
return r;
extern void _pgfault_upcall(void);
if ((r = sys_env_set_pgfault_upcall(envid, _pgfault_upcall)) < 0)
return r;
// Start the child environment running
if ((r = sys_env_set_status(envid, ENV_RUNNABLE)) < 0)
panic("sys_env_set_status: %e", r);
// Start the child environment running
if ((r = sys_env_set_status(envid, ENV_RUNNABLE)) < 0)
panic("sys_env_set_status: %e", r);
return envid;
return envid;
// panic("fork not implemented");
}