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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-09-29 16:18:06 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-09-30 15:25:15 -0300 |
| commit | 609c9d0951da387cd523b5db42a82d38dabc37c4 (patch) | |
| tree | a9f4e664f78c4d4870d479db5ef467519d015137 /sysdeps/mach/hurd | |
| parent | 13db9ee2cb3b77e25f852be7d6952882e1be6f00 (diff) | |
| download | glibc-609c9d0951da387cd523b5db42a82d38dabc37c4.tar.gz glibc-609c9d0951da387cd523b5db42a82d38dabc37c4.tar.xz glibc-609c9d0951da387cd523b5db42a82d38dabc37c4.zip | |
malloc: Do not clobber errno on __getrandom_nocancel (BZ #29624)
Use INTERNAL_SYSCALL_CALL instead of INLINE_SYSCALL_CALL. This requires emulate the semantic for hurd call (so __arc4random_buf uses the fallback). Checked on x86_64-linux-gnu. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Diffstat (limited to 'sysdeps/mach/hurd')
| -rw-r--r-- | sysdeps/mach/hurd/not-cancel.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sysdeps/mach/hurd/not-cancel.h b/sysdeps/mach/hurd/not-cancel.h index ae58b734e3..e2edfb1cf3 100644 --- a/sysdeps/mach/hurd/not-cancel.h +++ b/sysdeps/mach/hurd/not-cancel.h @@ -25,6 +25,7 @@ #include <sys/wait.h> #include <time.h> #include <sys/uio.h> +#include <sys/random.h> #include <hurd.h> #include <hurd/fd.h> @@ -75,8 +76,15 @@ __typeof (__fcntl) __fcntl_nocancel; #define __fcntl64_nocancel(...) \ __fcntl_nocancel (__VA_ARGS__) -#define __getrandom_nocancel(buf, size, flags) \ - __getrandom (buf, size, flags) +static inline ssize_t +__getrandom_nocancel (void *buf, size_t buflen, unsigned int flags) +{ + int save_errno = errno; + ssize_t r = __getrandom (buf, buflen, flags); + r = r == -1 ? -errno : r; + __set_errno (save_errno); + return r; +} #define __poll_infinity_nocancel(fds, nfds) \ __poll (fds, nfds, -1) |