Commit graph

20 commits

Author SHA1 Message Date
Johannes Berg
dbdda355d0 Introduce os_memdup()
This can be used to clean the code and reduce size by converting
os_malloc() followed by os_memcpy() cases to use a single function call.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-03-07 13:18:49 +02:00
Jouni Malinen
0e672b89e7 trace: Define externs in a header file
This gets rid of some unnecessary strace warnings from test builds.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2016-06-23 13:28:54 +03:00
Mitchell Wills
a218e1ded4 Make sure configuration is saved to storage device
Config file is written to a temp file and then it is renamed to the
original config file. However, it is possible that the rename operation
will be commited to storage while file data will be still in cache
causing original config file to be empty or partially written in case of
a system reboot without a clean shutdown. Make this less likely to occur
by forcing the data to be written to the storage device before renaming
the file.

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2015-08-27 18:06:05 +03:00
Jouni Malinen
2da525651d Add backtrace-based error path testing mechanism
The new TEST_FAIL and GET_FAIL control interface commands can be used
similarly to the earlier TEST_ALLOC_FAIL/GET_ALLOC_FAIL design. The new
version is more generic framework allowing any function to be annotated
for failure testing with the TEST_FAIL() macro. This mechanism is only
available in builds with CONFIG_WPA_TRACE_BFD=y and
CONFIG_TESTING_OPTIONS=y. For other builds, the TEST_FAIL() macro is
defined to return 0 to allow the compiler to remove the test code from
normal production builds.

As the first test site, allow os_get_random() to be marked for failing
based on call backtrace.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-06-29 23:23:56 +03:00
Jouni Malinen
0047306bc9 Add os_snprintf_error() helper
This can be used to check os_snprintf() return value more consistently.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-12-08 11:42:07 +02:00
Jouni Malinen
89de07a944 Add os_exec() helper to run external programs
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2014-10-09 17:38:25 +03:00
Jouni Malinen
afc3c8b07f Add constant time memory comparison function os_memcmp_const
This function is meant for comparing passwords or hash values where
difference in execution time could provide external observer information
about the location of the difference in the memory buffers. The return
value does not behave like os_memcmp(), i.e., os_memcmp_const() cannot
be used to sort items into a defined order. Unlike os_memcmp(),
execution time of os_memcmp_const() does not depend on the contents of
the compared memory buffers, but only on the total compared length.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-07-02 12:38:47 +03:00
Jouni Malinen
d2bb2b4681 Add os_file_exists()
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2014-03-12 01:09:22 +02:00
Emanuel Taube
064eb057ca Add os_remove_in_array()
This can be used to remove members from an array.

Signed-off-by: Emanuel Taube <emanuel.taube@gmail.com>
2014-02-25 16:10:29 +02:00
Johannes Berg
fe52c210cf Use monotonic clock for last_sae_token_key_update
Just the usual, with a new function os_reltime_initialized()
thrown in that checks whether time has ever been retrieved
(time can't be completely zero).

Signed-hostap: Johannes Berg <johannes.berg@intel.com>
2013-12-07 20:50:15 -08:00
Johannes Berg
e5c9e401a4 OS utils: Add os_reltime_expired()
This helper functions checks whether a given entry has expired,
given the last active timestamp, the current time, and a timeout.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-07 20:50:14 -08:00
Johannes Berg
ed0ebee14f OS utils: Provide os_reltime_age()
This function calculates and returns the time passed since
a given timestamp.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>
2013-12-07 18:55:58 -08:00
Johannes Berg
594516b4c2 Use monotonic clock for relative time for eloop if available
Relative time shouldn't be calculated based on gettimeofday
because that clock can jump (e.g., when the time is adjusted
by the system administrator.)

On systems where that is available, use CLOCK_BOOTTIME (on
fairly recent Linux systems, this clock takes into account
the time spend suspended) or CLOCK_MONOTONIC (on Linux and
some POSIX systems, this clock is just freely running with
no adjustments.)

Reported-by: Holger Schurig <holgerschurig@gmail.com>
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
2013-11-20 23:52:56 +02:00
Jouni Malinen
2f243b804a Remove os_strncpy()
os_strlpcy() should be used instead of os_strncpy() to guarantee null
termination. Since there are no remaining strncpy uses, remove
os_strncpy() definition.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-10-26 15:55:00 +03:00
Jouni Malinen
b0cda9bd46 Add os_realloc_array() wrapper
This function can be used as a wrapper for os_realloc(ptr, nmemb * size)
when a reallocation is used for an array. The main benefit over
os_realloc() is in having an extra check to catch integer overflows in
multiplication. This is similar to the os_zalloc() to os_calloc() move.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-08-13 21:20:09 +03:00
Jouni Malinen
64a2f2ece1 Add os_calloc() wrapper
This function can be used as a wrapper for os_zalloc(nmemb * size) when
an allocation is used for an array. The main benefit over os_zalloc() is
in having an extra check to catch integer overflows in multiplication.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-08-13 20:42:24 +03:00
Jouni Malinen
0f3d578efc Remove the GPL notification from files contributed by Jouni Malinen
Remove the GPL notification text from the files that were
initially contributed by myself.

Signed-hostap: Jouni Malinen <j@w1.fi>
2012-02-11 19:39:36 +02:00
Jouni Malinen
96b2cb226a Add os_gmtime() as wrapper for gmtime() 2011-10-18 00:23:42 +03:00
Jouni Malinen
fb4baa688b Add memory allocation analyzer to verify OS wrapper use
WPA_TRACE=y builds will now verify that memory allocation in done
consistently using os_{zalloc,malloc,realloc,strdup,free} (i.e., no
mixing of os_* functions and unwrapper functions). In addition, some
common memory allocation issues (double-free, memory leaks, etc.) are
detected automatically.
2009-12-19 21:47:56 +02:00
Jouni Malinen
6fc6879bd5 Re-initialize hostapd/wpa_supplicant git repository based on 0.6.3 release 2008-02-27 17:34:43 -08:00