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init:add Adjust Device Permission

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Signed-off-by: sun_fan <sun_fan@hoperun.com>
This commit is contained in:
sun_fan
2021-07-14 22:09:22 +08:00
parent 007bf0aaec
commit df7404b4dc
1 changed files with 31 additions and 2 deletions
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services/src/uevent.c
+31 -2
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@@ -378,7 +378,35 @@ static char **ParsePlatformBlockDevice(const struct Uevent *uevent)
return links;
}
static void MakeDevice(const char *devpath, const char *path, int block, int major, int minor)
struct DevPermissionMapper {
char *devName;
mode_t devMode;
uid_t uid;
gid_t gid;
};
struct DevPermissionMapper g_devMapper[] = {
{"/dev/binder", 0666, 0, 0}
};
static void AdjustDevicePermission(const char *devPath)
{
for (unsigned int i = 0; i < sizeof(g_devMapper) / sizeof(struct DevPermissionMapper); ++i) {
if (strcmp(devPath, g_devMapper[i].devName) == 0) {
if (chmod(g_devMapper[i].devName, g_devMapper[i].devMode) != 0) {
INIT_LOGE("AdjustDevicePermission, failed for %s, err %d.\n", g_devMapper[i].devName, errno);
return;
}
if (chown(g_devMapper[i].devName, g_devMapper[i].uid, g_devMapper[i].gid) != 0) {
INIT_LOGE("AdjustDevicePermission, failed for %s, err %d.\n", g_devMapper[i].devName, errno);
return;
}
INIT_LOGI("AdjustDevicePermission :%s success\n", g_devMapper[i].devName);
}
}
}
static void MakeDevice(const char *devPath, const char *path, int block, int major, int minor)
{
/* Only for super user */
gid_t gid = 0;
@@ -387,11 +415,12 @@ static void MakeDevice(const char *devpath, const char *path, int block, int maj
mode |= (block ? S_IFBLK : S_IFCHR);
dev = makedev(major, minor);
setegid(gid);
if (mknod(devpath, mode, dev) != 0) {
if (mknod(devPath, mode, dev) != 0) {
if (errno != EEXIST) {
INIT_LOGE("Make device node[%d, %d] failed. %d\n", major, minor, errno);
}
}
AdjustDevicePermission(devPath);
}
int MkdirRecursive(const char *pathName, mode_t mode)