/* link hash */
-static struct hash {
+#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
+
+static __initdata struct hash {
int ino, minor, major;
+ mode_t mode;
struct hash *next;
- char *name;
+ char name[N_ALIGN(PATH_MAX)];
} *head[32];
static inline int hash(int major, int minor, int ino)
return tmp & 31;
}
-static char __init *find_link(int major, int minor, int ino, char *name)
+static char __init *find_link(int major, int minor, int ino,
+ mode_t mode, char *name)
{
struct hash **p, *q;
for (p = head + hash(major, minor, ino); *p; p = &(*p)->next) {
continue;
if ((*p)->major != major)
continue;
+ if (((*p)->mode ^ mode) & S_IFMT)
+ continue;
return (*p)->name;
}
q = (struct hash *)malloc(sizeof(struct hash));
if (!q)
panic("can't allocate link hash entry");
- q->ino = ino;
- q->minor = minor;
q->major = major;
- q->name = name;
+ q->minor = minor;
+ q->ino = ino;
+ q->mode = mode;
+ strcpy(q->name, name);
q->next = NULL;
*p = q;
return NULL;
count -= n;
}
-#define N_ALIGN(len) ((((len) + 1) & ~3) + 2)
-
static __initdata char *collected;
static __initdata int remains;
static __initdata char *collect;
memcpy(collect, victim, n);
eat(n);
collect += n;
- if (remains -= n)
+ if ((remains -= n) != 0)
return 1;
state = next_state;
return 0;
static int __init do_header(void)
{
+ if (memcmp(collected, "070707", 6)==0) {
+ error("incorrect cpio method used: use -H newc option");
+ return 1;
+ }
if (memcmp(collected, "070701", 6)) {
error("no cpio magic");
return 1;
static int __init do_skip(void)
{
- if (this_header + count <= next_header) {
+ if (this_header + count < next_header) {
eat(count);
return 1;
} else {
static int __init maybe_link(void)
{
if (nlink >= 2) {
- char *old = find_link(major, minor, ino, collected);
+ char *old = find_link(major, minor, ino, mode, collected);
if (old)
return (sys_link(old, collected) < 0) ? -1 : 1;
}
return 0;
}
+static void __init clean_path(char *path, mode_t mode)
+{
+ struct stat st;
+
+ if (!sys_newlstat(path, &st) && (st.st_mode^mode) & S_IFMT) {
+ if (S_ISDIR(st.st_mode))
+ sys_rmdir(path);
+ else
+ sys_unlink(path);
+ }
+}
+
static __initdata int wfd;
static int __init do_name(void)
{
state = SkipIt;
- next_state = Start;
+ next_state = Reset;
if (strcmp(collected, "TRAILER!!!") == 0) {
free_hash();
- next_state = Reset;
return 0;
}
if (dry_run)
return 0;
+ clean_path(collected, mode);
if (S_ISREG(mode)) {
- if (maybe_link() >= 0) {
- wfd = sys_open(collected, O_WRONLY|O_CREAT, mode);
+ int ml = maybe_link();
+ if (ml >= 0) {
+ int openflags = O_WRONLY|O_CREAT;
+ if (ml != 1)
+ openflags |= O_TRUNC;
+ wfd = sys_open(collected, openflags, mode);
+
if (wfd >= 0) {
sys_fchown(wfd, uid, gid);
sys_fchmod(wfd, mode);
static int __init do_symlink(void)
{
collected[N_ALIGN(name_len) + body_len] = '\0';
+ clean_path(collected, 0);
sys_symlink(collected + N_ALIGN(name_len), collected);
sys_lchown(collected, uid, gid);
state = SkipIt;
- next_state = Start;
+ next_state = Reset;
return 0;
}
buf += written;
len -= written;
state = Start;
+ } else if (c == 0) {
+ buf += written;
+ len -= written;
+ state = Reset;
} else
error("junk in compressed archive");
}
#define Tracecv(c,x)
#define STATIC static
+#define INIT __init
-static void flush_window(void);
-static void error(char *m);
-static void gzip_mark(void **);
-static void gzip_release(void **);
+static void __init flush_window(void);
+static void __init error(char *m);
+static void __init gzip_mark(void **);
+static void __init gzip_release(void **);
#include "../lib/inflate.c"
outcnt = 0;
}
-char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
+static char * __init unpack_to_rootfs(char *buf, unsigned len, int check_only)
{
int written;
dry_run = check_only;
bytes_out = 0;
crc = (ulg)0xffffffffL; /* shift register contents */
makecrc();
- if (gunzip())
- message = "ungzip failed";
+ gunzip();
if (state != Reset)
error("junk in gzipped archive");
this_header = saved_offset + inptr;
return message;
}
-extern char __initramfs_start, __initramfs_end;
+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)
+static int __init populate_rootfs(void)
{
- char *err = unpack_to_rootfs(&__initramfs_start,
- &__initramfs_end - &__initramfs_start, 0);
+ char *err = unpack_to_rootfs(__initramfs_start,
+ __initramfs_end - __initramfs_start, 0);
if (err)
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,
printk(" it is\n");
unpack_to_rootfs((char *)initrd_start,
initrd_end - initrd_start, 0);
- free_initrd_mem(initrd_start, initrd_end);
- return;
+ free_initrd();
+ return 0;
}
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
+ return 0;
}
+rootfs_initcall(populate_rootfs);
git://git.onelab.eu / linux-2.6.git / blobdiff