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18252 Commits

Author SHA1 Message Date
Michael Kerrisk e5efbe9106 ioctl_userfaultfd.2: Fix misordering of sections 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-06 18:05:06 +02:00
Michael Kerrisk e89b82b758 ioctl_ns.2: Fix misordering of sections 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-06 18:04:14 +02:00
Michael Kerrisk 1172adfab5 ioctl_iflags.2: Fix misordering of sections 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-06 18:03:13 +02:00
Li Zhijian 21f685fd8f request_key.2: wfix: /etc/request-keys.conf -> /etc/request-key.conf 
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-06 09:36:44 +02:00
Michael Kerrisk 59d99553ae crypt.3: Note glibc version that added 'rounds' parameter 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-05 20:15:43 +02:00
Michael Kerrisk 42079b0179 crypt.3: Rework text describing 'rounds' parameter 
The text reads a little more clearly if we talk about
'xxx' rather than 'the supplied number'.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-05 20:13:18 +02:00
Michael Kerrisk 4c130fabc3 crypt.3: Minor wording improvements to Konstantin's patches 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-05 20:13:18 +02:00
Konstantin Shemyak 84bee58c24 crypt.3: Add description of previously undocumented 'rounds' parameter 
Files crypt/sha{256,512}-crypt.c in the glibc source define
macros:

    /* Default number of rounds if not explicitly specified.  */
    #define ROUNDS_DEFAULT 5000
    /* Minimum number of rounds.  */
    #define ROUNDS_MIN 1000
    /* Maximum number of rounds.  */
    #define ROUNDS_MAX 999999999

And the main encryption function __sha512_crypt_r() sets:

    rounds = MAX (ROUNDS_MIN, MIN (srounds, ROUNDS_MAX));

One can check that for example

    crypt("key", "$5$rounds=1$salt")

returns the string

    $5$rounds=1000$salt$PWLKU7MTJ0s5M/mjBPcqnMsorm3qKyoBctxmZ1mNwn2

This parameter has been introduced in glibc 2.7.

Signed-off-by: Konstantin Shemyak <konstantin@shemyak.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-05 19:49:35 +02:00
Konstantin Shemyak d32b36982d crypt.3: Clarify that ending of the salt string with '$' is optional 
In crypt/sha512-crypt.c::__sha512_crypt_r() and the similar
sha256 function, the length of the actually used salt is
calculated as:

  salt_len = MIN (strcspn (salt, "$"), SALT_LEN_MAX);

Thus the trailing '$' is optional in the salt string. One can
check that

    crypt("key", "$5$salt")

yields the same result as

    crypt("key", "$5$salt$").

Signed-off-by: Konstantin Shemyak <konstantin@shemyak.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-05 19:48:35 +02:00
Konstantin Shemyak 893c609dcd crypt.3: Encryption isn't done with SHA-xxx, but with a function based on SHA-xxx 
The encryption is done by glibc functions __shaxxx_crypt_r() in
files crypt/shaxxx-crypt.c. They implement a nontrivial algorithm
to construct the inputs for the hashing functions and to apply
them iteratively.

Signed-off-by: Konstantin Shemyak <konstantin@shemyak.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-05 19:47:52 +02:00
Konstantin Shemyak 266d8f7ef1 crypt.3: ffix 
Signed-off-by: Konstantin Shemyak <konstantin@shemyak.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-04 01:27:21 +02:00
Michael Kerrisk 0e840b4234 keyctl.2: Minor fixes to Eugene's patch 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 13:27:56 +02:00
Eugene Syromyatnikov 54d5a1c72b keyctl.2: Document the KEYCTL_RESTRICT_KEYRING operation 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 13:18:44 +02:00
Michael Kerrisk 8a351f8497 getrlimit.2: Note that RLIMIT_AS and RLIMIT_DATA are rounded down to system page size 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 04:06:51 +02:00
Michael Kerrisk b50667ac6d getrlimit.2: Mention unit for RLIMIT_DATA 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:48:39 +02:00
Thiago Jung Bauermann 4a63f626b5 getrlimit.2: Mention unit used by RLIMIT_CORE and RLIMIT_FSIZE 
It would have been obvious that these limits are in bytes, except that
"ulimit -a" in at least bash, dash and zsh says that they're in blocks.
This confused me, so I had to check the kernel source code.

My understanding is that they are indeed in bytes, so mention this
information in the man page.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:45:56 +02:00
Michael Kerrisk df81149955 keyctl.2: Minor fixes to Eugene's patch 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:41:42 +02:00
Eugene Syromyatnikov a02cbc788b keyctl.2: Document the ability to provide KDF parameters in KEYCTL_DH_COMPUTE 
Acked-by: Stephan Müller <smueller@chronox.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:28:50 +02:00
Eugene Syromyatnikov e937944e81 keyctl.2: Mention ENOMEM in ERRORS 
This one is not very specific, as memory allocations are scattered across
the code, so let's put some generic description here.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:24:42 +02:00
Eugene Syromyatnikov 04630ce71c keyrings.7: Add pointers to kernel's documentation 
Mostly because of assymmetric-keys.txt, which is outside
security/keys for some reason.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:19:48 +02:00
Michael Kerrisk 954be1b921 keyctl.2: Minor tweaks to Eugene's patch (mention old keys.txt file) 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:18:48 +02:00
Michael Kerrisk f17b3bd8ee keyctl.2: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:17:52 +02:00
Eugene Syromyatnikov 514c8256cc keyctl.2: Update kernel documentation path reference 
It has been changed in b68101a1e8f0263dbc7b8375d2a7c57c6216fb76
(Linux 4.13).

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:16:46 +02:00
Eugene Syromyatnikov 8a156aca74 keyctl.2: wfix: change "is" to "was" in error descriptions 
Since half of items used "was" and another half used "is".

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:13:53 +02:00
Michael Kerrisk d7f23d0bd6 proc.5: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:12:25 +02:00
Eugene Syromyatnikov 76f6f10206 proc.5: Add description for softirq line in /proc/stat 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:11:20 +02:00
Eugene Syromyatnikov 46f6dbe83f proc.5: Add description for cpuN lines in /pro/stat 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:10:01 +02:00
Eugene Syromyatnikov 2d3fb75b7b proc.5: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-09-03 02:07:29 +02:00
Michael Kerrisk d754b76ddc ioctl_tty.2: Elaborate a little on the rationale for TIOCGPTPEER 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-28 21:20:31 +02:00
Michael Kerrisk f88bf37c1d intro.6: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk f05f1a0749 mdoc.samples.7: grfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk 11cabd5ae3 intro.5: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk 4d53aa005e MB_LEN_MAX.3: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk 0fd98a89aa nologin.5: Add a sentence explaining why nologin is useful 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk e2c4b45d40 issue.5: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk 2a2ecb8753 MB_LEN_MAX.3: grfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:03 +02:00
Michael Kerrisk c28ca2ba8c zdump.8: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:02 +02:00
Michael Kerrisk 82cc682cef mdoc.7: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:41:00 +02:00
Michael Kerrisk c695beb6a8 intro.7: wfix: make NAME line a bit more general 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 21:14:59 +02:00
Michael Kerrisk c86d3187e6 intro.4: SEE ALSO: add mknod(1) and mknod(2) 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 20:59:34 +02:00
Michael Kerrisk b96315d884 queue.3: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 20:54:52 +02:00
Michael Kerrisk b5360edbd3 MB_CUR_MAX.3: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 20:51:31 +02:00
Michael Kerrisk e3f77df9dc ipc.2: SEE ALSO: add svipc(7) 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 20:48:00 +02:00
Michael Kerrisk cf9c395834 ipc.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 20:47:45 +02:00
Michael Kerrisk e5486b10fa ldd.1: Add more detail on ldd security implications, noting glibc 2.27 changes 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-25 00:37:36 +02:00
Michael Kerrisk 36454047ec stat.2: wfix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-24 12:58:47 +02:00
Darrick J. Wong 06ad9290b7 ioctl_getfsmap.2: Correct semantics of FMR_OF_LAST flag 
The FMR_OF_LAST flag is applied to the last record in the returned
data set, which is not necessarily the last record in the
filesystem.  Correct the documentation to reflect the actual
behavior of both getfsmap implementations.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-24 00:32:44 +02:00
Michael Kerrisk 73593f0d3b matherr.3: Note that glibc 2.27 removes the 'matherr' mechanism 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-23 12:36:40 +02:00
Michael Kerrisk d4f849a29d matherr.3: Remove crufty feature test macro requirements 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-23 12:12:11 +02:00
Michael Kerrisk e2a71fb39a regex.7: ffix 
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
 2017-08-22 02:55:13 +02:00