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-rw-r--r--include/unistd.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/unistd.h b/include/unistd.h
index 36cd5fcb5..e45266f14 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -316,6 +316,10 @@ libc_hidden_proto(faccessat)
# define SEEK_SET 0 /* Seek from beginning of file. */
# define SEEK_CUR 1 /* Seek from current position. */
# define SEEK_END 2 /* Seek from end of file. */
+# ifdef __USE_GNU
+# define SEEK_DATA 3 /* Seek to next data. */
+# define SEEK_HOLE 4 /* Seek to next hole. */
+# endif
#endif
#if defined __USE_BSD && !defined L_SET
@@ -1246,6 +1250,15 @@ extern void swab (const void *__restrict __from, void *__restrict __to,
extern char *ctermid (char *__s) __THROW;
#endif
+/* OpenBSD-compatible access to random bytes.
+ May be a cancellation point here, unlike in glibc/musl. */
+#ifdef _DEFAULT_SOURCE
+# ifndef __getentropy_defined
+extern int getentropy(void *__buf, size_t __len) __nonnull ((1)) __wur;
+# define __getentropy_defined
+# endif
+#endif
+
__END_DECLS