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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 15:57:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 15:57:47 -0700
commit8065be8d032f38da25b54bf077a05a30d9ce9f2a (patch)
tree32a7baf4b40e0240ab4b9dd6f2bbe6129929bb66 /init
parent27d438c56009e5ae632de36fe70985d1aab5e344 (diff)
parentecc265fe9e09e32a3573b2ba26e79b2099eb8bbb (diff)
downloadlinux-stericsson-8065be8d032f38da25b54bf077a05a30d9ce9f2a.tar.gz
Merge branch 'akpm' (second patchbomb from Andrew Morton)
Merge more incoming from Andrew Morton: "Two new syscalls: memfd_create in "shm: add memfd_create() syscall" kexec_file_load in "kexec: implementation of new syscall kexec_file_load" And: - Most (all?) of the rest of MM - Lots of the usual misc bits - fs/autofs4 - drivers/rtc - fs/nilfs - procfs - fork.c, exec.c - more in lib/ - rapidio - Janitorial work in filesystems: fs/ufs, fs/reiserfs, fs/adfs, fs/cramfs, fs/romfs, fs/qnx6. - initrd/initramfs work - "file sealing" and the memfd_create() syscall, in tmpfs - add pci_zalloc_consistent, use it in lots of places - MAINTAINERS maintenance - kexec feature work" * emailed patches from Andrew Morton <akpm@linux-foundation.org: (193 commits) MAINTAINERS: update nomadik patterns MAINTAINERS: update usb/gadget patterns MAINTAINERS: update DMA BUFFER SHARING patterns kexec: verify the signature of signed PE bzImage kexec: support kexec/kdump on EFI systems kexec: support for kexec on panic using new system call kexec-bzImage64: support for loading bzImage using 64bit entry kexec: load and relocate purgatory at kernel load time purgatory: core purgatory functionality purgatory/sha256: provide implementation of sha256 in purgaotory context kexec: implementation of new syscall kexec_file_load kexec: new syscall kexec_file_load() declaration kexec: make kexec_segment user buffer pointer a union resource: provide new functions to walk through resources kexec: use common function for kimage_normal_alloc() and kimage_crash_alloc() kexec: move segment verification code in a separate function kexec: rename unusebale_pages to unusable_pages kernel: build bin2c based on config option CONFIG_BUILD_BIN2C bin2c: move bin2c in scripts/basic shm: wait for pins to be released when sealing ...
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig5
-rw-r--r--init/do_mounts.c12
-rw-r--r--init/do_mounts_rd.c10
-rw-r--r--init/initramfs.c60
-rw-r--r--init/main.c23
5 files changed, 73 insertions, 37 deletions
diff --git a/init/Kconfig b/init/Kconfig
index a291b7ef4738..44f9ed3dae22 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -783,8 +783,13 @@ endchoice
endmenu # "RCU Subsystem"
+config BUILD_BIN2C
+ bool
+ default n
+
config IKCONFIG
tristate "Kernel .config support"
+ select BUILD_BIN2C
---help---
This option enables the complete Linux kernel ".config" file
contents to be saved in the kernel. It provides documentation
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 82f22885c87e..b6237c31b0e2 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -539,12 +539,6 @@ void __init prepare_namespace(void)
{
int is_floppy;
- if (root_delay) {
- printk(KERN_INFO "Waiting %d sec before mounting root device...\n",
- root_delay);
- ssleep(root_delay);
- }
-
/*
* wait for the known devices to complete their probing
*
@@ -571,6 +565,12 @@ void __init prepare_namespace(void)
if (initrd_load())
goto out;
+ if (root_delay) {
+ pr_info("Waiting %d sec before mounting root device...\n",
+ root_delay);
+ ssleep(root_delay);
+ }
+
/* wait for any asynchronous scanning to complete */
if ((ROOT_DEV == 0) && root_wait) {
printk(KERN_INFO "Waiting for root device %s...\n",
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index a8227022e3a0..e5d059e8aa11 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -311,9 +311,9 @@ static int exit_code;
static int decompress_error;
static int crd_infd, crd_outfd;
-static int __init compr_fill(void *buf, unsigned int len)
+static long __init compr_fill(void *buf, unsigned long len)
{
- int r = sys_read(crd_infd, buf, len);
+ long r = sys_read(crd_infd, buf, len);
if (r < 0)
printk(KERN_ERR "RAMDISK: error while reading compressed data");
else if (r == 0)
@@ -321,13 +321,13 @@ static int __init compr_fill(void *buf, unsigned int len)
return r;
}
-static int __init compr_flush(void *window, unsigned int outcnt)
+static long __init compr_flush(void *window, unsigned long outcnt)
{
- int written = sys_write(crd_outfd, window, outcnt);
+ long written = sys_write(crd_outfd, window, outcnt);
if (written != outcnt) {
if (decompress_error == 0)
printk(KERN_ERR
- "RAMDISK: incomplete write (%d != %d)\n",
+ "RAMDISK: incomplete write (%ld != %ld)\n",
written, outcnt);
decompress_error = 1;
return -1;
diff --git a/init/initramfs.c b/init/initramfs.c
index a8497fab1c3d..bece48c3461e 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -19,6 +19,29 @@
#include <linux/syscalls.h>
#include <linux/utime.h>
+static ssize_t __init xwrite(int fd, const char *p, size_t count)
+{
+ ssize_t out = 0;
+
+ /* sys_write only can write MAX_RW_COUNT aka 2G-4K bytes at most */
+ while (count) {
+ ssize_t rv = sys_write(fd, p, count);
+
+ if (rv < 0) {
+ if (rv == -EINTR || rv == -EAGAIN)
+ continue;
+ return out ? out : rv;
+ } else if (rv == 0)
+ break;
+
+ p += rv;
+ out += rv;
+ count -= rv;
+ }
+
+ return out;
+}
+
static __initdata char *message;
static void __init error(char *x)
{
@@ -174,7 +197,7 @@ static __initdata enum state {
} state, next_state;
static __initdata char *victim;
-static __initdata unsigned count;
+static unsigned long count __initdata;
static __initdata loff_t this_header, next_header;
static inline void __init eat(unsigned n)
@@ -186,7 +209,7 @@ static inline void __init eat(unsigned n)
static __initdata char *vcollected;
static __initdata char *collected;
-static __initdata int remains;
+static long remains __initdata;
static __initdata char *collect;
static void __init read_into(char *buf, unsigned size, enum state next)
@@ -213,7 +236,7 @@ static int __init do_start(void)
static int __init do_collect(void)
{
- unsigned n = remains;
+ unsigned long n = remains;
if (count < n)
n = count;
memcpy(collect, victim, n);
@@ -346,7 +369,8 @@ static int __init do_name(void)
static int __init do_copy(void)
{
if (count >= body_len) {
- sys_write(wfd, victim, body_len);
+ if (xwrite(wfd, victim, body_len) != body_len)
+ error("write error");
sys_close(wfd);
do_utime(vcollected, mtime);
kfree(vcollected);
@@ -354,7 +378,8 @@ static int __init do_copy(void)
state = SkipIt;
return 0;
} else {
- sys_write(wfd, victim, count);
+ if (xwrite(wfd, victim, count) != count)
+ error("write error");
body_len -= count;
eat(count);
return 1;
@@ -384,7 +409,7 @@ static __initdata int (*actions[])(void) = {
[Reset] = do_reset,
};
-static int __init write_buffer(char *buf, unsigned len)
+static long __init write_buffer(char *buf, unsigned long len)
{
count = len;
victim = buf;
@@ -394,11 +419,11 @@ static int __init write_buffer(char *buf, unsigned len)
return len - count;
}
-static int __init flush_buffer(void *bufv, unsigned len)
+static long __init flush_buffer(void *bufv, unsigned long len)
{
char *buf = (char *) bufv;
- int written;
- int origLen = len;
+ long written;
+ long origLen = len;
if (message)
return -1;
while ((written = write_buffer(buf, len)) < len && !message) {
@@ -417,13 +442,13 @@ static int __init flush_buffer(void *bufv, unsigned len)
return origLen;
}
-static unsigned my_inptr; /* index of next byte to be processed in inbuf */
+static unsigned long my_inptr; /* index of next byte to be processed in inbuf */
#include <linux/decompress/generic.h>
-static char * __init unpack_to_rootfs(char *buf, unsigned len)
+static char * __init unpack_to_rootfs(char *buf, unsigned long len)
{
- int written, res;
+ long written;
decompress_fn decompress;
const char *compress_name;
static __initdata char msg_buf[64];
@@ -457,7 +482,7 @@ static char * __init unpack_to_rootfs(char *buf, unsigned len)
decompress = decompress_method(buf, len, &compress_name);
pr_debug("Detected %s compressed data\n", compress_name);
if (decompress) {
- res = decompress(buf, len, NULL, flush_buffer, NULL,
+ int res = decompress(buf, len, NULL, flush_buffer, NULL,
&my_inptr, error);
if (res)
error("decompressor failed");
@@ -603,8 +628,13 @@ static int __init populate_rootfs(void)
fd = sys_open("/initrd.image",
O_WRONLY|O_CREAT, 0700);
if (fd >= 0) {
- sys_write(fd, (char *)initrd_start,
- initrd_end - initrd_start);
+ ssize_t written = xwrite(fd, (char *)initrd_start,
+ initrd_end - initrd_start);
+
+ if (written != initrd_end - initrd_start)
+ pr_err("/initrd.image: incomplete write (%zd != %ld)\n",
+ written, initrd_end - initrd_start);
+
sys_close(fd);
free_initrd();
}
diff --git a/init/main.c b/init/main.c
index e8ae1fef0908..bb1aed928f21 100644
--- a/init/main.c
+++ b/init/main.c
@@ -6,7 +6,7 @@
* GK 2/5/95 - Changed to support mounting root fs via NFS
* Added initrd & change_root: Werner Almesberger & Hans Lermen, Feb '96
* Moan early if gcc is old, avoiding bogus kernels - Paul Gortmaker, May '96
- * Simplified starting of init: Michael A. Griffith <grif@acm.org>
+ * Simplified starting of init: Michael A. Griffith <grif@acm.org>
*/
#define DEBUG /* Enable initcall_debug */
@@ -136,7 +136,7 @@ static char *ramdisk_execute_command;
* Used to generate warnings if static_key manipulation functions are used
* before jump_label_init is called.
*/
-bool static_key_initialized __read_mostly = false;
+bool static_key_initialized __read_mostly;
EXPORT_SYMBOL_GPL(static_key_initialized);
/*
@@ -159,8 +159,8 @@ static int __init set_reset_devices(char *str)
__setup("reset_devices", set_reset_devices);
-static const char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
-const char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
+static const char *argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
+const char *envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
static const char *panic_later, *panic_param;
extern const struct obs_kernel_param __setup_start[], __setup_end[];
@@ -199,7 +199,6 @@ static int __init obsolete_checksetup(char *line)
* still work even if initially too large, it will just take slightly longer
*/
unsigned long loops_per_jiffy = (1<<12);
-
EXPORT_SYMBOL(loops_per_jiffy);
static int __init debug_kernel(char *str)
@@ -376,8 +375,8 @@ static void __init setup_command_line(char *command_line)
initcall_command_line =
memblock_virt_alloc(strlen(boot_command_line) + 1, 0);
static_command_line = memblock_virt_alloc(strlen(command_line) + 1, 0);
- strcpy (saved_command_line, boot_command_line);
- strcpy (static_command_line, command_line);
+ strcpy(saved_command_line, boot_command_line);
+ strcpy(static_command_line, command_line);
}
/*
@@ -445,8 +444,8 @@ void __init parse_early_options(char *cmdline)
/* Arch code calls this early on, or if not, just before other parsing. */
void __init parse_early_param(void)
{
- static __initdata int done = 0;
- static __initdata char tmp_cmdline[COMMAND_LINE_SIZE];
+ static int done __initdata;
+ static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata;
if (done)
return;
@@ -500,7 +499,8 @@ static void __init mm_init(void)
asmlinkage __visible void __init start_kernel(void)
{
- char * command_line, *after_dashes;
+ char *command_line;
+ char *after_dashes;
extern const struct kernel_param __start___param[], __stop___param[];
/*
@@ -572,7 +572,8 @@ asmlinkage __visible void __init start_kernel(void)
* fragile until we cpu_idle() for the first time.
*/
preempt_disable();
- if (WARN(!irqs_disabled(), "Interrupts were enabled *very* early, fixing it\n"))
+ if (WARN(!irqs_disabled(),
+ "Interrupts were enabled *very* early, fixing it\n"))
local_irq_disable();
idr_init_cache();
rcu_init();