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mcexec: fix readlink

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refs #692
This commit is contained in:
Yoichi Umezawa
2016-02-25 16:08:42 +09:00
parent 1f8a859b47
commit 972ff73ecf
1 changed files with 19 additions and 0 deletions
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19
executer/user/mcexec.c
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@ -2239,6 +2239,25 @@ return_execve2:
do_syscall_return(fd, cpu, ret, 0, 0, 0, 0);
break;
case __NR_readlink:
ret = do_strncpy_from_user(fd, pathbuf, (void *)w.sr.args[0], PATH_MAX);
if (ret >= PATH_MAX) {
ret = -ENAMETOOLONG;
}
if (ret < 0) {
do_syscall_return(fd, cpu, ret, 0, 0, 0, 0);
break;
}
fn = chgpath(pathbuf, tmpbuf);
ret = readlink(fn, (char *)w.sr.args[1], w.sr.args[2]);
__dprintf("readlink: path=%s, buf=%s, ret=%ld\n",
fn, (char *)w.sr.args[1], ret);
SET_ERR(ret);
do_syscall_return(fd, cpu, ret, 0, 0, 0, 0);
break;
default:
ret = do_generic_syscall(&w);
do_syscall_return(fd, cpu, ret, 0, 0, 0, 0);