[IOAT]: Do not dereference THIS_MODULE directly to set unsafe.
[linux-2.6.git] / init / initramfs.c
index 02c5ce6..f81cfa4 100644 (file)
@@ -26,10 +26,12 @@ static void __init free(void *where)
 
 /* link hash */
 
+#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
+
 static __initdata struct hash {
        int ino, minor, major;
        struct hash *next;
-       char *name;
+       char name[N_ALIGN(PATH_MAX)];
 } *head[32];
 
 static inline int hash(int major, int minor, int ino)
@@ -57,7 +59,7 @@ static char __init *find_link(int major, int minor, int ino, char *name)
        q->ino = ino;
        q->minor = minor;
        q->major = major;
-       q->name = name;
+       strcpy(q->name, name);
        q->next = NULL;
        *p = q;
        return NULL;
@@ -133,8 +135,6 @@ static inline void eat(unsigned n)
        count -= n;
 }
 
-#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
-
 static __initdata char *collected;
 static __initdata int remains;
 static __initdata char *collect;
@@ -466,6 +466,36 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
 extern char __initramfs_start[], __initramfs_end[];
 #ifdef CONFIG_BLK_DEV_INITRD
 #include <linux/initrd.h>
+#include <linux/kexec.h>
+
+static void __init free_initrd(void)
+{
+#ifdef CONFIG_KEXEC
+       unsigned long crashk_start = (unsigned long)__va(crashk_res.start);
+       unsigned long crashk_end   = (unsigned long)__va(crashk_res.end);
+
+       /*
+        * If the initrd region is overlapped with crashkernel reserved region,
+        * free only memory that is not part of crashkernel region.
+        */
+       if (initrd_start < crashk_end && initrd_end > crashk_start) {
+               /*
+                * Initialize initrd memory region since the kexec boot does
+                * not do.
+                */
+               memset((void *)initrd_start, 0, initrd_end - initrd_start);
+               if (initrd_start < crashk_start)
+                       free_initrd_mem(initrd_start, crashk_start);
+               if (initrd_end > crashk_end)
+                       free_initrd_mem(crashk_end, initrd_end);
+       } else
+#endif
+               free_initrd_mem(initrd_start, initrd_end);
+
+       initrd_start = 0;
+       initrd_end = 0;
+}
+
 #endif
 
 void __init populate_rootfs(void)
@@ -476,6 +506,7 @@ void __init populate_rootfs(void)
                panic(err);
 #ifdef CONFIG_BLK_DEV_INITRD
        if (initrd_start) {
+#ifdef CONFIG_BLK_DEV_RAM
                int fd;
                printk(KERN_INFO "checking if image is initramfs...");
                err = unpack_to_rootfs((char *)initrd_start,
@@ -484,17 +515,26 @@ void __init populate_rootfs(void)
                        printk(" it is\n");
                        unpack_to_rootfs((char *)initrd_start,
                                initrd_end - initrd_start, 0);
-                       free_initrd_mem(initrd_start, initrd_end);
+                       free_initrd();
                        return;
                }
                printk("it isn't (%s); looks like an initrd\n", err);
-               fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 700);
+               fd = sys_open("/initrd.image", O_WRONLY|O_CREAT, 0700);
                if (fd >= 0) {
                        sys_write(fd, (char *)initrd_start,
                                        initrd_end - initrd_start);
                        sys_close(fd);
-                       free_initrd_mem(initrd_start, initrd_end);
+                       free_initrd();
                }
+#else
+               printk(KERN_INFO "Unpacking initramfs...");
+               err = unpack_to_rootfs((char *)initrd_start,
+                       initrd_end - initrd_start, 0);
+               if (err)
+                       panic(err);
+               printk(" done\n");
+               free_initrd();
+#endif
        }
 #endif
 }