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Merge "init: rework fixup_sys_perms to use perm_path_matches" am: 0504a94cd9 

am: e7028e3d38

* commit 'e7028e3d382ee4099cfc4c1cbfa650fd2f820410':
  init: rework fixup_sys_perms to use perm_path_matches

Change-Id: Iaebea1a143b053ee1c41c47cb5eb2329f992330f
This commit is contained in:
Rob Herring 2016-05-13 20:33:28 +00:00 committed by android-build-merger
parent d21c737db4 e7028e3d38
commit 7aef62751b
1 changed files with 30 additions and 43 deletions
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73
init/devices.cpp
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@ -130,49 +130,6 @@ int add_dev_perms(const char *name, const char *attr,
return 0;
}
void fixup_sys_perms(const char *upath)
{
char buf[512];
struct listnode *node;
struct perms_ *dp;
/* upaths omit the "/sys" that paths in this list
* contain, so we add 4 when comparing...
*/
list_for_each(node, &sys_perms) {
dp = &(node_to_item(node, struct perm_node, plist))->dp;
if (dp->prefix) {
if (strncmp(upath, dp->name + 4, strlen(dp->name + 4)))
continue;
} else if (dp->wildcard) {
if (fnmatch(dp->name + 4, upath, FNM_PATHNAME) != 0)
continue;
} else {
if (strcmp(upath, dp->name + 4))
continue;
}
if ((strlen(upath) + strlen(dp->attr) + 6) > sizeof(buf))
break;
snprintf(buf, sizeof(buf), "/sys%s/%s", upath, dp->attr);
INFO("fixup %s %d %d 0%o\n", buf, dp->uid, dp->gid, dp->perm);
chown(buf, dp->uid, dp->gid);
chmod(buf, dp->perm);
}
// Now fixup SELinux file labels
int len = snprintf(buf, sizeof(buf), "/sys%s", upath);
if ((len < 0) || ((size_t) len >= sizeof(buf))) {
// Overflow
return;
}
if (access(buf, F_OK) == 0) {
INFO("restorecon_recursive: %s\n", buf);
restorecon_recursive(buf);
}
}
static bool perm_path_matches(const char *path, struct perms_ *dp)
{
if (dp->prefix) {
@ -189,6 +146,36 @@ static bool perm_path_matches(const char *path, struct perms_ *dp)
return false;
}
void fixup_sys_perms(const char *upath)
{
struct listnode *node;
/* upaths omit the "/sys" that paths in this list
* contain, so we prepend it...
*/
std::string path = SYSFS_PREFIX;
path += upath;
list_for_each(node, &sys_perms) {
perms_ *dp;
dp = &(node_to_item(node, struct perm_node, plist))->dp;
if (!perm_path_matches(path.c_str(), dp)) {
continue;
}
std::string attr_file = path + "/" + dp->attr;
INFO("fixup %s %d %d 0%o\n", attr_file.c_str(), dp->uid, dp->gid, dp->perm);
chown(attr_file.c_str(), dp->uid, dp->gid);
chmod(attr_file.c_str(), dp->perm);
}
if (access(path.c_str(), F_OK) == 0) {
INFO("restorecon_recursive: %s\n", path.c_str());
restorecon_recursive(path.c_str());
}
}
static mode_t get_device_perm(const char *path, const char **links,
unsigned *uid, unsigned *gid)
{