int32_t NaClSysLstat(struct NaClAppThread *natp,
uint32_t pathname,
uint32_t nasp) {
struct NaClApp *nap = natp->nap;
int32_t retval = -NACL_ABI_EINVAL;
char path[NACL_CONFIG_PATH_MAX];
nacl_host_stat_t stbuf;
NaClLog(3,
("Entered NaClSysLstat(0x%08"NACL_PRIxPTR", 0x%08"NACL_PRIx32","
" 0x%08"NACL_PRIx32")\n"), (uintptr_t) natp, pathname, nasp);
if (!NaClAclBypassChecks) {
return -NACL_ABI_EACCES;
}
retval = CopyPathFromUser(nap, path, sizeof path, pathname);
if (0 != retval)
return retval;
/*
* Perform a host stat.
*/
retval = NaClHostDescLstat(path, &stbuf);
if (0 == retval) {
struct nacl_abi_stat abi_stbuf;
retval = NaClAbiStatHostDescStatXlateCtor(&abi_stbuf, &stbuf);
if (!NaClCopyOutToUser(nap, nasp, &abi_stbuf, sizeof abi_stbuf)) {
return -NACL_ABI_EFAULT;
}
}
return retval;
}
static int NaClDescIoDescFstat(struct NaClDesc *vself,
struct nacl_abi_stat *statbuf) {
struct NaClDescIoDesc *self = (struct NaClDescIoDesc *) vself;
int rv;
nacl_host_stat_t hstatbuf;
rv = NaClHostDescFstat(self->hd, &hstatbuf);
if (0 != rv) {
return rv;
}
return NaClAbiStatHostDescStatXlateCtor(statbuf, &hstatbuf);
}
int32_t NaClSysStat(struct NaClAppThread *natp,
const char *pathname,
struct nacl_abi_stat *buf) {
struct NaClApp *nap = natp->nap;
int32_t retval = -NACL_ABI_EINVAL;
char path[NACL_CONFIG_PATH_MAX];
nacl_host_stat_t stbuf;
NaClLog(3,
("Entered NaClSysStat(0x%08"NACL_PRIxPTR", 0x%08"NACL_PRIxPTR","
" 0x%08"NACL_PRIxPTR")\n"),
(uintptr_t) natp, (uintptr_t) pathname, (uintptr_t) buf);
retval = CopyPathFromUser(nap, path, sizeof path, (uintptr_t) pathname);
if (0 != retval)
goto cleanup;
retval = NaClStatAclCheck(nap, path);
if (0 != retval)
goto cleanup;
/*
* Perform a host stat.
*/
retval = NaClHostDescStat(path, &stbuf);
if (0 == retval) {
struct nacl_abi_stat abi_stbuf;
retval = NaClAbiStatHostDescStatXlateCtor(&abi_stbuf,
&stbuf);
if (!NaClCopyOutToUser(nap, (uintptr_t) buf,
&abi_stbuf, sizeof abi_stbuf)) {
retval = -NACL_ABI_EFAULT;
}
}
cleanup:
return retval;
}
