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Chris Metcalf 1818613828 string: provide strscpy() 
commit 30035e45753b708e7d47a98398500ca005e02b86 upstream.

The strscpy() API is intended to be used instead of strlcpy(),
and instead of most uses of strncpy().

- Unlike strlcpy(), it doesn't read from memory beyond (src + size).

- Unlike strlcpy() or strncpy(), the API provides an easy way to check
  for destination buffer overflow: an -E2BIG error return value.

- The provided implementation is robust in the face of the source
  buffer being asynchronously changed during the copy, unlike the
  current implementation of strlcpy().

- Unlike strncpy(), the destination buffer will be NUL-terminated
  if the string in the source buffer is too long.

- Also unlike strncpy(), the destination buffer will not be updated
  beyond the NUL termination, avoiding strncpy's behavior of zeroing
  the entire tail end of the destination buffer.  (A memset() after
  the strscpy() can be used if this behavior is desired.)

- The implementation should be reasonably performant on all
  platforms since it uses the asm/word-at-a-time.h API rather than
  simple byte copy.  Kernel-to-kernel string copy is not considered
  to be performance critical in any case.

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
 		2019-07-27 21:52:09 +02:00
..
lz4 lz4: fix another possible overrun 2016-05-18 14:34:38 +05:30
lzo lzo: check for length overrun in variable length encoding. 2014-10-30 09:35:11 -07:00
mpi Import latest Samsung release 2017-04-18 03:43:52 +02:00
raid6
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reed_solomon
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xz
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zlib_deflate
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zlib_inflate
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.gitignore
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Kconfig lib: add lz4 compressor module 2015-09-16 18:20:12 +05:30
Kconfig.debug time: Remove CONFIG_TIMER_STATS 2017-04-22 23:02:59 +02:00
Kconfig.kasan kasan: enable instrumentation of global variables 2015-05-04 14:03:57 -07:00
Kconfig.kgdb
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Kconfig.kmemcheck
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Makefile lib: add lz4 compressor module 2015-09-16 18:20:12 +05:30
argv_split.c
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asn1_decoder.c BACKPORT: ASN.1: fix out-of-bounds read when parsing indefinite length item 2019-07-27 21:50:02 +02:00
atomic64.c
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atomic64_test.c
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audit.c
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average.c
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bcd.c
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bch.c
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bitmap.c Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
bitrev.c
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bsearch.c
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btree.c lib/btree.c: fix leak of whole btree nodes 2014-08-07 14:30:27 -07:00
bug.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
build_OID_registry
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bust_spinlocks.c
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check_signature.c
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checksum.c lib/checksum.c: fix build for generic csum_tcpudp_nofold 2015-02-11 14:48:17 +08:00
clz_tab.c
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cmdline.c lib/cmdline.c: fix get_options() overflow while parsing ranges 2019-07-27 21:44:24 +02:00
cordic.c
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cpu-notifier-error-inject.c
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cpu_rmap.c irq: Allow multiple clients to register for irq affinity notification 2014-11-09 15:17:27 -08:00
cpumask.c sched/fair, cpumask: Export for_each_cpu_wrap() 2019-07-27 21:44:52 +02:00
crc-ccitt.c
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crc-itu-t.c
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crc-t10dif.c
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crc7.c
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crc8.c
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crc16.c
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crc32.c
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crc32defs.h
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ctype.c
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debug_locks.c
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debugobjects.c debugobjects: use kmemleak_not_leak for obj_cache 2015-05-29 19:35:14 +05:30
dec_and_lock.c
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decompress.c
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decompress_bunzip2.c decompress_bunzip2: off by one in get_next_block() 2015-01-27 07:52:33 -08:00
decompress_inflate.c lib/decompressors: fix "no limit" output buffer length 2014-02-06 11:08:12 -08:00
decompress_unlzma.c
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decompress_unlzo.c
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decompress_unxz.c
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devres.c This is the 3.10.99 stable release 2017-04-18 17:17:46 +02:00
digsig.c lib/digsig: fix dereference of NULL user_key_payload 2019-07-27 21:44:22 +02:00
div64.c UPSTREAM: math64: New separate div64_u64_rem helper 2016-05-18 14:36:10 +05:30
dma-debug.c dma-debug: switch check from _text to _stext 2016-02-25 11:57:49 -08:00
dump_stack.c
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dynamic_debug.c dynamic_debug: Handle kstrdup failure in dynamic_debug_init 2015-06-20 18:25:48 -07:00
dynamic_queue_limits.c
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earlycpio.c
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extable.c
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fault-inject.c
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fdt.c
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fdt_ro.c
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fdt_rw.c
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fdt_strerror.c
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fdt_sw.c
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fdt_wip.c
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find_last_bit.c
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find_next_bit.c
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flex_array.c
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flex_proportions.c
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gcd.c
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gen_crc32table.c
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genalloc.c Merge upstream linux-stable v3.10.28 into msm-3.10 2014-03-24 14:28:34 -07:00
halfmd4.c
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hexdump.c
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hweight.c
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idr.c idr: fix overflow bug during maximum ID calculation at maximum height 2014-06-30 20:09:42 -07:00
inflate.c
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int_sqrt.c lib/int_sqrt: optimize small argument 2019-07-27 21:46:05 +02:00
interval_tree.c
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interval_tree_test_main.c
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iomap.c lib: iomap: Add MSM RTB support 2014-09-04 19:40:43 -07:00
iomap_copy.c
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iommu-helper.c
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ioremap.c
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iovec.c
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irq_regs.c
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is_single_threaded.c
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jedec_ddr_data.c
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kasprintf.c
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kfifo.c
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klist.c klist: fix starting point removed bug in klist iterators 2016-02-25 11:57:47 -08:00
kobject.c
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kobject_uevent.c
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kstrtox.c
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kstrtox.h
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lcm.c
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libcrc32c.c
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list_debug.c
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list_sort.c
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llist.c
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locking-selftest-hardirq.h
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locking-selftest-mutex.h
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locking-selftest-rlock-hardirq.h
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locking-selftest-rlock-softirq.h
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locking-selftest-rlock.h
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locking-selftest-rsem.h
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locking-selftest-softirq.h
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locking-selftest-spin-hardirq.h
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locking-selftest-spin-softirq.h
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locking-selftest-spin.h
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locking-selftest-wlock-hardirq.h
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locking-selftest-wlock-softirq.h
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locking-selftest-wlock.h
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locking-selftest-wsem.h
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locking-selftest.c
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lru_cache.c
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md5.c
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memory-notifier-error-inject.c
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memweight.c
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nlattr.c netlink: rate-limit leftover bytes warning and print process name 2014-06-26 15:12:37 -04:00
notifier-error-inject.c
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notifier-error-inject.h
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of-reconfig-notifier-error-inject.c
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oid_registry.c
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parser.c
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pci_iomap.c
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percpu_counter.c
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plist.c
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pm-notifier-error-inject.c
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prio_heap.c
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proportions.c
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qmi_encdec.c This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
qmi_encdec_priv.h
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radix-tree.c radix-tree: fix race in gang lookup 2016-02-25 11:57:49 -08:00
random32.c random32: include missing header file 2017-09-08 18:50:21 +00:00
ratelimit.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
rational.c
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rbtree.c rbtree: add postorder iteration functions 2015-09-16 18:20:19 +05:30
rbtree_test.c
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reciprocal_div.c
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scatterlist.c Merge upstream linux-stable v3.10.28 into msm-3.10 2014-03-24 14:28:34 -07:00
sha1.c
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show_mem.c
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smp_processor_id.c
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sort.c
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stmp_device.c
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string.c string: provide strscpy() 2019-07-27 21:52:09 +02:00
string_helpers.c
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strncpy_from_user.c
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strnlen_user.c lib: Fix strnlen_user() to not touch memory after specified maximum 2015-06-05 23:19:54 -07:00
swiotlb.c swiotlb: Setting default IO TBL value to 1MB 2014-06-02 08:46:43 -07:00
syscall.c
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test-kstrtox.c
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test-string_helpers.c
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textsearch.c
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timerqueue.c
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ts_bm.c
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ts_fsm.c
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ts_kmp.c
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ucs2_string.c lib/ucs2_string: Correct ucs2 -> utf8 conversion 2016-03-16 08:41:37 -07:00
usercopy.c
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uuid.c
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vsprintf.c vsprintf: ignore %n again 2014-05-30 10:23:23 -07:00