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export arc4random_buf - 1.21.80.20 #38

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export arc4random_buf - 1.21.80.20 #38

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12 changes: 12 additions & 0 deletions src/common.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -441,6 +441,13 @@ int shim::isnan(double d) {
return std::isnan(d);
}

#ifdef __linux__
void shim::arc4random_buf(void* buf, size_t len) {
// We could use glibc arc4random_buf iff we would target glibc 2.36
(void)syscall(SYS_getrandom, buf, len, 0);
}
#endif

void shim::add_common_shimmed_symbols(std::vector<shim::shimmed_symbol> &list) {
list.insert(list.end(), {
{"__errno", bionic::get_errno},
Expand Down Expand Up @@ -631,6 +638,11 @@ void shim::add_time_shimmed_symbols(std::vector<shim::shimmed_symbol> &list) {
{"ctime_r", ::ctime_r},
{"tzname", ::tzname},
{"tzset", ::tzset},
#ifdef __linux__
{"arc4random_buf", shim::arc4random_buf},
#else
{"arc4random_buf", ::arc4random_buf},
#endif
#ifndef __FreeBSD__
{"daylight", &::daylight},
#endif
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4 changes: 4 additions & 0 deletions src/common.h
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Expand Up @@ -151,6 +151,10 @@ namespace shim {

int isnan(double d);

#ifdef __linux__
void arc4random_buf(void* buf, size_t len);
#endif

int utimensat(int dirfd, const char *pathname, const struct timespec times[2], int flags);

void add_common_shimmed_symbols(std::vector<shimmed_symbol> &list);
Expand Down