diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 12 | ||||
| -rw-r--r-- | lib/Makefile | 6 | ||||
| -rw-r--r-- | lib/asn1_decoder.c | 2 | ||||
| -rw-r--r-- | lib/bitmap.c | 2 | ||||
| -rw-r--r-- | lib/cpumask.c | 2 | ||||
| -rw-r--r-- | lib/earlycpio.c | 145 |
6 files changed, 157 insertions, 12 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 28e9d6c98941..e458782f3c52 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -972,7 +972,7 @@ config RCU_CPU_STALL_TIMEOUT int "RCU CPU stall timeout in seconds" depends on TREE_RCU || TREE_PREEMPT_RCU range 3 300 - default 60 + default 21 help If a given RCU grace period extends more than the specified number of seconds, a CPU stall warning is printed. If the @@ -1115,7 +1115,7 @@ config NOTIFIER_ERROR_INJECTION depends on DEBUG_KERNEL select DEBUG_FS help - This option provides the ability to inject artifical errors to + This option provides the ability to inject artificial errors to specified notifier chain callbacks. It is useful to test the error handling of notifier call chain failures. @@ -1126,7 +1126,7 @@ config CPU_NOTIFIER_ERROR_INJECT depends on HOTPLUG_CPU && NOTIFIER_ERROR_INJECTION help This option provides a kernel module that can be used to test - the error handling of the cpu notifiers by injecting artifical + the error handling of the cpu notifiers by injecting artificial errors to CPU notifier chain callbacks. It is controlled through debugfs interface under /sys/kernel/debug/notifier-error-inject/cpu @@ -1150,7 +1150,7 @@ config PM_NOTIFIER_ERROR_INJECT depends on PM && NOTIFIER_ERROR_INJECTION default m if PM_DEBUG help - This option provides the ability to inject artifical errors to + This option provides the ability to inject artificial errors to PM notifier chain callbacks. It is controlled through debugfs interface /sys/kernel/debug/notifier-error-inject/pm @@ -1173,7 +1173,7 @@ config MEMORY_NOTIFIER_ERROR_INJECT tristate "Memory hotplug notifier error injection module" depends on MEMORY_HOTPLUG_SPARSE && NOTIFIER_ERROR_INJECTION help - This option provides the ability to inject artifical errors to + This option provides the ability to inject artificial errors to memory hotplug notifier chain callbacks. It is controlled through debugfs interface under /sys/kernel/debug/notifier-error-inject/memory @@ -1196,7 +1196,7 @@ config PSERIES_RECONFIG_NOTIFIER_ERROR_INJECT tristate "pSeries reconfig notifier error injection module" depends on PPC_PSERIES && NOTIFIER_ERROR_INJECTION help - This option provides the ability to inject artifical errors to + This option provides the ability to inject artificial errors to pSeries reconfig notifier chain callbacks. It is controlled through debugfs interface under /sys/kernel/debug/notifier-error-inject/pSeries-reconfig/ diff --git a/lib/Makefile b/lib/Makefile index 821a16229111..e2152fa7ff4d 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -12,7 +12,8 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ idr.o int_sqrt.o extable.o \ sha1.o md5.o irq_regs.o reciprocal_div.o argv_split.o \ proportions.o flex_proportions.o prio_heap.o ratelimit.o show_mem.o \ - is_single_threaded.o plist.o decompress.o + is_single_threaded.o plist.o decompress.o kobject_uevent.o \ + earlycpio.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o @@ -31,7 +32,6 @@ CFLAGS_kobject.o += -DDEBUG CFLAGS_kobject_uevent.o += -DDEBUG endif -lib-$(CONFIG_HOTPLUG) += kobject_uevent.o obj-$(CONFIG_GENERIC_IOMAP) += iomap.o obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o @@ -163,7 +163,7 @@ $(obj)/crc32table.h: $(obj)/gen_crc32table # obj-$(CONFIG_OID_REGISTRY) += oid_registry.o -$(obj)/oid_registry.c: $(obj)/oid_registry_data.c +$(obj)/oid_registry.o: $(obj)/oid_registry_data.c $(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \ $(src)/build_OID_registry diff --git a/lib/asn1_decoder.c b/lib/asn1_decoder.c index de2c8b5a715b..5293d2433029 100644 --- a/lib/asn1_decoder.c +++ b/lib/asn1_decoder.c @@ -91,7 +91,7 @@ next_tag: /* Extract the length */ len = data[dp++]; - if (len < 0x7f) { + if (len <= 0x7f) { dp += len; goto next_tag; } diff --git a/lib/bitmap.c b/lib/bitmap.c index 06fdfa1aeba7..06f7e4fe8d2d 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -353,7 +353,7 @@ again: EXPORT_SYMBOL(bitmap_find_next_zero_area); /* - * Bitmap printing & parsing functions: first version by Bill Irwin, + * Bitmap printing & parsing functions: first version by Nadia Yvette Chambers, * second version by Paul Jackson, third by Joe Korty. */ diff --git a/lib/cpumask.c b/lib/cpumask.c index 402a54ac35cb..d327b87c99b7 100644 --- a/lib/cpumask.c +++ b/lib/cpumask.c @@ -161,6 +161,6 @@ EXPORT_SYMBOL(free_cpumask_var); */ void __init free_bootmem_cpumask_var(cpumask_var_t mask) { - free_bootmem((unsigned long)mask, cpumask_size()); + free_bootmem(__pa(mask), cpumask_size()); } #endif diff --git a/lib/earlycpio.c b/lib/earlycpio.c new file mode 100644 index 000000000000..8078ef49cb79 --- /dev/null +++ b/lib/earlycpio.c @@ -0,0 +1,145 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2012 Intel Corporation; author H. Peter Anvin + * + * This file is part of the Linux kernel, and is made available + * under the terms of the GNU General Public License version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * ----------------------------------------------------------------------- */ + +/* + * earlycpio.c + * + * Find a specific cpio member; must precede any compressed content. + * This is used to locate data items in the initramfs used by the + * kernel itself during early boot (before the main initramfs is + * decompressed.) It is the responsibility of the initramfs creator + * to ensure that these items are uncompressed at the head of the + * blob. Depending on the boot loader or package tool that may be a + * separate file or part of the same file. + */ + +#include <linux/earlycpio.h> +#include <linux/kernel.h> +#include <linux/string.h> + +enum cpio_fields { + C_MAGIC, + C_INO, + C_MODE, + C_UID, + C_GID, + C_NLINK, + C_MTIME, + C_FILESIZE, + C_MAJ, + C_MIN, + C_RMAJ, + C_RMIN, + C_NAMESIZE, + C_CHKSUM, + C_NFIELDS +}; + +/** + * cpio_data find_cpio_data - Search for files in an uncompressed cpio + * @path: The directory to search for, including a slash at the end + * @data: Pointer to the the cpio archive or a header inside + * @len: Remaining length of the cpio based on data pointer + * @offset: When a matching file is found, this is the offset to the + * beginning of the cpio. It can be used to iterate through + * the cpio to find all files inside of a directory path + * + * @return: struct cpio_data containing the address, length and + * filename (with the directory path cut off) of the found file. + * If you search for a filename and not for files in a directory, + * pass the absolute path of the filename in the cpio and make sure + * the match returned an empty filename string. + */ + +struct cpio_data __cpuinit find_cpio_data(const char *path, void *data, + size_t len, long *offset) +{ + const size_t cpio_header_len = 8*C_NFIELDS - 2; + struct cpio_data cd = { NULL, 0, "" }; + const char *p, *dptr, *nptr; + unsigned int ch[C_NFIELDS], *chp, v; + unsigned char c, x; + size_t mypathsize = strlen(path); + int i, j; + + p = data; + + while (len > cpio_header_len) { + if (!*p) { + /* All cpio headers need to be 4-byte aligned */ + p += 4; + len -= 4; + continue; + } + + j = 6; /* The magic field is only 6 characters */ + chp = ch; + for (i = C_NFIELDS; i; i--) { + v = 0; + while (j--) { + v <<= 4; + c = *p++; + + x = c - '0'; + if (x < 10) { + v += x; + continue; + } + + x = (c | 0x20) - 'a'; + if (x < 6) { + v += x + 10; + continue; + } + + goto quit; /* Invalid hexadecimal */ + } + *chp++ = v; + j = 8; /* All other fields are 8 characters */ + } + + if ((ch[C_MAGIC] - 0x070701) > 1) + goto quit; /* Invalid magic */ + + len -= cpio_header_len; + + dptr = PTR_ALIGN(p + ch[C_NAMESIZE], 4); + nptr = PTR_ALIGN(dptr + ch[C_FILESIZE], 4); + + if (nptr > p + len || dptr < p || nptr < dptr) + goto quit; /* Buffer overrun */ + + if ((ch[C_MODE] & 0170000) == 0100000 && + ch[C_NAMESIZE] >= mypathsize && + !memcmp(p, path, mypathsize)) { + *offset = (long)nptr - (long)data; + if (ch[C_NAMESIZE] - mypathsize >= MAX_CPIO_FILE_NAME) { + pr_warn( + "File %s exceeding MAX_CPIO_FILE_NAME [%d]\n", + p, MAX_CPIO_FILE_NAME); + } + strlcpy(cd.name, p + mypathsize, MAX_CPIO_FILE_NAME); + + cd.data = (void *)dptr; + cd.size = ch[C_FILESIZE]; + return cd; /* Found it! */ + } + len -= (nptr - p); + p = nptr; + } + +quit: + return cd; +} |