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author | Simo Sorce <simo@redhat.com> | 2012-10-20 01:10:20 -0400 |
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committer | Simo Sorce <simo@redhat.com> | 2013-01-10 12:24:59 -0500 |
commit | c63415eabb1dc595c60760fb1df7fa7cfd1d3200 (patch) | |
tree | e169d1edc152cbbe0a3b25a22fb9e3f46f7bb7b1 /src/util/util.c | |
parent | c83e409297711e6012a164cc929c758a3f38e9b9 (diff) | |
download | sssd-c63415eabb1dc595c60760fb1df7fa7cfd1d3200.tar.gz sssd-c63415eabb1dc595c60760fb1df7fa7cfd1d3200.tar.xz sssd-c63415eabb1dc595c60760fb1df7fa7cfd1d3200.zip |
Add function to safely wipe memory.
This is useful for wiping passwords, as it prevents the compiler from
optimizing out a memset to zero before a free()
Diffstat (limited to 'src/util/util.c')
-rw-r--r-- | src/util/util.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/util/util.c b/src/util/util.c index b035e2319..ba85e0da2 100644 --- a/src/util/util.c +++ b/src/util/util.c @@ -679,3 +679,12 @@ bool string_in_list(const char *string, char **list, bool case_sensitive) return false; } + +void safezero(void *data, size_t size) +{ + volatile uint8_t *p = data; + + while (size--) { + *p++ = 0; + } +} |