Fix RISC OS not having a pread/pwrite implementation.

1 files changed, 32 insertions, 0 deletions

diff --git a/utils/utils.c b/utils/utils.c
index 5c8acd6f0..722e32302 100644
--- a/utils/utils.c
+++ b/utils/utils.c
@@ -32,6 +32,7 @@
 #include <regex.h>
 #include <time.h>
 #include <errno.h>
+#include <unistd.h>
 
 #include "utils/config.h"
 #include "utils/log.h"
@@ -628,3 +629,34 @@ nserror nsc_snptimet(char *str, size_t size, time_t *timep)
 
 	return NSERROR_OK;
 }
+
+#ifndef HAVE_PREAD
+
+ssize_t pread(int fd, void *buf, size_t count, off_t offset)
+{
+	off_t sk;
+
+	sk = lseek(fd, offset, SEEK_SET);
+	if (sk == -1) {
+		return (off_t)-1;
+	}
+	return read(fd, buf, count);
+}
+
+#endif
+
+
+#ifndef HAVE_PWRITE
+
+ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+	off_t sk;
+
+	sk = lseek(fd, offset, SEEK_SET);
+	if (sk == (off_t)-1) {
+		return -1;
+	}
+	return write(fd, buf, count);
+}
+
+#endif