Documentation: core-api: add generic parser docbook

Add the simple generic parser to the core-api docbook.
It can be used for parsing all sorts of options throughout the kernel.

Signed-off-by: Rand

Documentation: core-api: add generic parser docbook

Add the simple generic parser to the core-api docbook.
It can be used for parsing all sorts of options throughout the kernel.

Signed-off-by: Randy Dunlap <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Eric Biggers <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

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lib: parser: update documentation for match_NUMBER functions

commit 67222c4ba8af ("lib: parser: optimize match_NUMBER apis to use local
array") removed -ENOMEM as a possible return value, so update

lib: parser: update documentation for match_NUMBER functions

commit 67222c4ba8af ("lib: parser: optimize match_NUMBER apis to use local
array") removed -ENOMEM as a possible return value, so update the comments
accordingly.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 67222c4ba8af ("lib: parser: optimize match_NUMBER apis to use local array")
Signed-off-by: Eric Biggers <[email protected]>
Cc: Li Lingfeng <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Yu Kuai <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

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lib: parser: optimize match_NUMBER apis to use local array

Memory will be allocated to store substring_t in match_strdup(), which
means the caller of match_strdup() may need to be scheduled out to w

lib: parser: optimize match_NUMBER apis to use local array

Memory will be allocated to store substring_t in match_strdup(), which
means the caller of match_strdup() may need to be scheduled out to wait
for reclaiming memory. smatch complains that this can cuase sleeping in
an atoic context.

Using local array to store substring_t to remove the restriction.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lore.kernel.org/all/[email protected]/
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 2c0647988433 ("blk-iocost: don't release 'ioc->lock' while updating params")
Signed-off-by: Li Lingfeng <[email protected]>
Reported-by: Yu Kuai <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Cc: BingJing Chang <[email protected]>
Cc: Eric Biggers <[email protected]>
Cc: Hou Tao <[email protected]>
Cc: James Smart <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: yangerkun <[email protected]>
Cc: Zhang Yi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

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kernel.h: split out kstrtox() and simple_strtox() to a separate header

kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitti

kernel.h: split out kstrtox() and simple_strtox() to a separate header

kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out kstrtox() and
simple_strtox() helpers.

At the same time convert users in header and lib folders to use new
header. Though for time being include new header back to kernel.h to
avoid twisted indirected includes for existing users.

[[email protected]: fix documentation references]
Link: https://lkml.kernel.org/r/[email protected]

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Andy Shevchenko <[email protected]>
Acked-by: Jonathan Cameron <[email protected]>
Cc: Francis Laniel <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Kars Mulder <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Anna Schumaker <[email protected]>
Cc: "J. Bruce Fields" <[email protected]>
Cc: Chuck Lever <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib: parser: clean up kernel-doc

Mark match_uint() as kernel-doc notation since it is already fully
annotated as such. Use % prefix on constants in kernel-doc comments.
Convert function return desc

lib: parser: clean up kernel-doc

Mark match_uint() as kernel-doc notation since it is already fully
annotated as such. Use % prefix on constants in kernel-doc comments.
Convert function return descriptions to use the "Return:" kernel-doc
notation.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Randy Dunlap <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: David Howells <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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parser: Fix kernel-doc markups

Fix existing issues at the kernel-doc markups

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Randy Dunlap <rdunlap@infrade

parser: Fix kernel-doc markups

Fix existing issues at the kernel-doc markups

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: BingJing Chang <[email protected]>
Signed-off-by: Jan Kara <[email protected]>

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parser: add unsigned int parser

Will be used by fs parsing options

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Robbie Ko<[email protected]>
Review

parser: add unsigned int parser

Will be used by fs parsing options

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Robbie Ko<[email protected]>
Reviewed-by: Chung-Chiang Cheng <[email protected]>
Signed-off-by: BingJing Chang <[email protected]>
Signed-off-by: Jan Kara <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230

Based on 2 normalized pattern(s):

this source code is licensed under the gnu general public license
version 2 see the file cop

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230

Based on 2 normalized pattern(s):

this source code is licensed under the gnu general public license
version 2 see the file copying for more details

this source code is licensed under general public license version 2
see

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 52 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Enrico Weigelt <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Alexios Zavras <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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lib/parser.c: switch match_number() over to use match_strdup()

This simplifies the code. No change in behavior.

Link: http://lkml.kernel.org/r/[email protected]
Signed-of

lib/parser.c: switch match_number() over to use match_strdup()

This simplifies the code. No change in behavior.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Eric Biggers <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib/parser.c: switch match_u64int() over to use match_strdup()

This simplifies the code. No change in behavior.

Link: http://lkml.kernel.org/r/[email protected]
Signed-of

lib/parser.c: switch match_u64int() over to use match_strdup()

This simplifies the code. No change in behavior.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Eric Biggers <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib/parser.c: switch match_strdup() over to use kmemdup_nul()

This simplifies the code. No change in behavior.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off

lib/parser.c: switch match_strdup() over to use kmemdup_nul()

This simplifies the code. No change in behavior.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Eric Biggers <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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parser: add u64 number parser

Will be used by the nvme-fabrics FC transport in parsing options

Signed-off-by: James Smart <[email protected]>
Signed-off-by: Sagi Grimberg <[email protected]>

lib/parser.c: put EXPORT_SYMBOLs in the conventional place

Cc: Du, Changbin <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-

lib/parser.c: put EXPORT_SYMBOLs in the conventional place

Cc: Du, Changbin <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib/parser.c: add match_wildcard() function

match_wildcard function is a simple implementation of wildcard
matching algorithm. It only supports two usual wildcardes:
'*' - matches zero or more c

lib/parser.c: add match_wildcard() function

match_wildcard function is a simple implementation of wildcard
matching algorithm. It only supports two usual wildcardes:
'*' - matches zero or more characters
'?' - matches one character
This algorithm is safe since it is non-recursive.

Signed-off-by: Du, Changbin <[email protected]>
Cc: Jason Baron <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib/parser.c: fix up comments for valid return values from match_number

match_number() has return values of -ENOMEM, -EINVAL and -ERANGE. So, for
all the functions calling match_number, the return

lib/parser.c: fix up comments for valid return values from match_number

match_number() has return values of -ENOMEM, -EINVAL and -ERANGE. So, for
all the functions calling match_number, the return value should include
these values. Fix up the comments to reflect the correct values.

Signed-off-by: Namjae Jeon <[email protected]>
Signed-off-by: Amit Sahrawat <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib/parser.c: avoid overflow in match_number()

The result of converting an integer value to another signed integer type
that's unable to represent the original value is implementation defined.
(See

lib/parser.c: avoid overflow in match_number()

The result of converting an integer value to another signed integer type
that's unable to represent the original value is implementation defined.
(See notes in section 6.3.1.3 of the C standard.)

In match_number(), the result of simple_strtol() (which returns type long)
is assigned to a value of type int.

Instead, handle the result of simple_strtol() in a well-defined way, and
return -ERANGE if the result won't fit in the int variable used to hold
the parsed result.

No current callers pay attention to the particular error value returned,
so this additional return code shouldn't do any harm.

[[email protected]: coding-style tweaks]
Signed-off-by: Alex Elder <[email protected]>
Cc: Randy Dunlap <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib: reduce the use of module.h wherever possible

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map
them onto including export.h -- or if the file isn't even
using those, then just delete t

lib: reduce the use of module.h wherever possible

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map
them onto including export.h -- or if the file isn't even
using those, then just delete the include. Fix up any implicit
include dependencies that were being masked by module.h along
the way.

Signed-off-by: Paul Gortmaker <[email protected]>

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Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <[email protected]>

lib/parser: cleanup match_number()

Use new variable 'len' to make code more readable.

Signed-off-by: Namhyung Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signe

lib/parser: cleanup match_number()

Use new variable 'len' to make code more readable.

Signed-off-by: Namhyung Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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parser: remove unnecessary strlen()

No functional change. Cache strlen() result to avoid recalculating it up
to 3 times on the worst case.

Reduces code size a little by 32 bytes:
text data

parser: remove unnecessary strlen()

No functional change. Cache strlen() result to avoid recalculating it up
to 3 times on the worst case.

Reduces code size a little by 32 bytes:
text data bss dec hex filename
1385 0 0 1385 569 lib/parser.o-BEFORE
1353 0 0 1353 549 lib/parser.o-AFTER

Signed-off-by: André Goddard Rosa <[email protected]>
Cc: Randy Dunlap <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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vfs: Use const for kernel parser table

This is a much better version of a previous patch to make the parser
tables constant. Rather than changing the typedef, we put the "const" in
all the various p

vfs: Use const for kernel parser table

This is a much better version of a previous patch to make the parser
tables constant. Rather than changing the typedef, we put the "const" in
all the various places where its required, allowing the __initconst
exception for nfsroot which was the cause of the previous trouble.

This was posted for review some time ago and I believe its been in -mm
since then.

Signed-off-by: Steven Whitehouse <[email protected]>
Cc: Alexander Viro <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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add match_strlcpy() us it to make v9fs make uname and remotename parsing more robust

match_strcpy() is a somewhat creepy function: the caller needs to make sure
that the destination buffer is big en

add match_strlcpy() us it to make v9fs make uname and remotename parsing more robust

match_strcpy() is a somewhat creepy function: the caller needs to make sure
that the destination buffer is big enough, and when he screws up or
forgets, match_strcpy() happily overruns the buffer.

There's exactly one customer: v9fs_parse_options(). I believe it currently
can't overflow its buffer, but that's not exactly obvious.

The source string is a substing of the mount options. The kernel silently
truncates those to PAGE_SIZE bytes, including the terminating zero. See
compat_sys_mount() and do_mount().

The destination buffer is obtained from __getname(), which allocates from
name_cachep, which is initialized by vfs_caches_init() for size PATH_MAX.

We're safe as long as PATH_MAX <= PAGE_SIZE. PATH_MAX is 4096. As far as
I know, the smallest PAGE_SIZE is also 4096.

Here's a patch that makes the code a bit more obviously correct. It
doesn't depend on PATH_MAX <= PAGE_SIZE.

Signed-off-by: Markus Armbruster <[email protected]>
Cc: Latchesar Ionkov <[email protected]>
Cc: Jim Meyering <[email protected]>
Cc: "Randy.Dunlap" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Eric Van Hensbergen <[email protected]>

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[AFS]: Make the match_*() functions take const options.

Make the match_*() functions take a const pointer to the options table
and make strings pointers in the options table const too.

Signed-off-b

[AFS]: Make the match_*() functions take const options.

Make the match_*() functions take a const pointer to the options table
and make strings pointers in the options table const too.

Signed-off-by: David Howells <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in

Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

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