[PATCH 4/5] scripts/common: Add write_full() and read_full()

[Sascha Hauer]

We have different implementations of read_full() and write_full() in our
host tools, use a common implementation for these.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 scripts/common.c          | 36 ++++++++++++++++++++++++++++++++++++
 scripts/common.h          |  2 ++
 scripts/rkimage.c         | 39 +++------------------------------------
 scripts/socfpga_mkimage.c | 20 --------------------
 4 files changed, 41 insertions(+), 56 deletions(-)

diff --git a/scripts/common.c b/scripts/common.c
index 5e0139278a..bff08b0810 100644
--- a/scripts/common.c
+++ b/scripts/common.c
@@ -130,3 +130,39 @@ out:
 
 	return ret;
 }
+
+int read_full(int fd, void *buf, size_t size)
+{
+	size_t insize = size;
+	int now;
+	int total = 0;
+
+	while (size) {
+		now = read(fd, buf, size);
+		if (now == 0)
+			return total;
+		if (now < 0)
+			return now;
+		total += now;
+		size -= now;
+		buf += now;
+	}
+
+	return insize;
+}
+
+int write_full(int fd, void *buf, size_t size)
+{
+	size_t insize = size;
+	int now;
+
+	while (size) {
+		now = write(fd, buf, size);
+		if (now <= 0)
+			return now;
+		size -= now;
+		buf += now;
+	}
+
+	return insize;
+}
diff --git a/scripts/common.h b/scripts/common.h
index a15691f039..820108c52c 100644
--- a/scripts/common.h
+++ b/scripts/common.h
@@ -4,5 +4,7 @@
 int read_file_2(const char *filename, size_t *size, void **outbuf, size_t max_size);
 void *read_file(const char *filename, size_t *size);
 int write_file(const char *filename, const void *buf, size_t size);
+int read_full(int fd, void *buf, size_t size);
+int write_full(int fd, void *buf, size_t size);
 
 #endif /* __COMMON_H */
diff --git a/scripts/rkimage.c b/scripts/rkimage.c
index dde9724886..be89c1ad34 100644
--- a/scripts/rkimage.c
+++ b/scripts/rkimage.c
@@ -13,6 +13,9 @@
 #include <errno.h>
 #include <stdbool.h>
 
+#include "../common.h"
+#include "../common.c"
+
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
 #define ALIGN(x, a)        (((x) + (a) - 1) & ~((a) - 1))
 
@@ -149,42 +152,6 @@ static void usage(const char *prgname)
 	prgname);
 }
 
-static int read_full(int fd, void *buf, size_t size)
-{
-	size_t insize = size;
-	int now;
-	int total = 0;
-
-	while (size) {
-		now = read(fd, buf, size);
-		if (now == 0)
-			return total;
-		if (now < 0)
-			return now;
-		total += now;
-		size -= now;
-		buf += now;
-	}
-
-	return insize;
-}
-
-static int write_full(int fd, void *buf, size_t size)
-{
-	size_t insize = size;
-	int now;
-
-	while (size) {
-		now = write(fd, buf, size);
-		if (now <= 0)
-			return now;
-		size -= now;
-		buf += now;
-	}
-
-	return insize;
-}
-
 int main(int argc, char *argv[])
 {
 	int opt, i, fd;
diff --git a/scripts/socfpga_mkimage.c b/scripts/socfpga_mkimage.c
index 3ef41edf8f..d37ca8585a 100644
--- a/scripts/socfpga_mkimage.c
+++ b/scripts/socfpga_mkimage.c
@@ -68,26 +68,6 @@ static uint32_t bb_header[] = {
 	0xea00006b,	/* entry. b 0x200 (offset may be adjusted) */
 };
 
-static int read_full(int fd, void *buf, size_t size)
-{
-	size_t insize = size;
-	int now;
-	int total = 0;
-
-	while (size) {
-		now = read(fd, buf, size);
-		if (now == 0)
-			return total;
-		if (now < 0)
-			return now;
-		total += now;
-		size -= now;
-		buf += now;
-	}
-
-	return insize;
-}
-
 static const uint32_t crc_table[256] = {
 	0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
 	0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
-- 
2.30.2