Put xread/xwrite to misc.c - dedup - deduplicating backup program
HTML git clone git://bitreich.org/dedup/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/dedup/
DIR Log
DIR Files
DIR Refs
DIR Tags
DIR README
DIR LICENSE
---
DIR commit 7a2e4a88b5471cb53583ea7df33ec8c79efa5e38
DIR parent 53b588c7899ecf4f4c969259e2c80f18192893ba
HTML Author: sin <sin@2f30.org>
Date: Sat, 27 Apr 2019 18:42:20 +0100
Put xread/xwrite to misc.c
Diffstat:
M Makefile | 1 +
M bstorage.c | 42 ++-----------------------------
M chunker.c | 22 ++--------------------
M dup-unpack.c | 22 ++--------------------
A misc.c | 43 ++++++++++++++++++++++++++++++
M snap.c | 43 +++----------------------------
6 files changed, 53 insertions(+), 120 deletions(-)
---
DIR diff --git a/Makefile b/Makefile
@@ -21,6 +21,7 @@ COMMOBJ = \
block.o \
bstorage.o \
chunker.o \
+ misc.o \
pack.o \
snap.o \
unpack.o \
DIR diff --git a/bstorage.c b/bstorage.c
@@ -49,6 +49,8 @@
#define CSNAPPYTYPE 1
#define HBLAKE2BTYPE 0
+extern ssize_t xread(int fd, void *buf, size_t nbytes);
+extern ssize_t xwrite(int fd, void *buf, size_t nbytes);
extern int pack(unsigned char *dst, char *fmt, ...);
extern int unpack(unsigned char *src, char *fmt, ...);
@@ -129,46 +131,6 @@ bhash(void *buf, size_t n, unsigned char *md)
return blake2b_final(&ctx, md, MDSIZE);
}
-static ssize_t
-xread(int fd, void *buf, size_t nbytes)
-{
- unsigned char *bp = buf;
- ssize_t total = 0;
-
- while (nbytes > 0) {
- ssize_t n;
-
- n = read(fd, &bp[total], nbytes);
- if (n < 0)
- return -1;
- else if (n == 0)
- return total;
- total += n;
- nbytes -= n;
- }
- return total;
-}
-
-static ssize_t
-xwrite(int fd, void *buf, size_t nbytes)
-{
- unsigned char *bp = buf;
- ssize_t total = 0;
-
- while (nbytes > 0) {
- ssize_t n;
-
- n = write(fd, &bp[total], nbytes);
- if (n < 0)
- return -1;
- else if (n == 0)
- return total;
- total += n;
- nbytes -= n;
- }
- return total;
-}
-
/* Read block header */
static int
unpackbhdr(int fd, struct bhdr *bhdr)
DIR diff --git a/chunker.c b/chunker.c
@@ -6,6 +6,8 @@
#define ROTL(x, y) (((x) << (y)) | ((x) >> (32 - (y))))
+extern ssize_t xread(int fd, void *buf, size_t nbytes);
+
struct chunker {
unsigned char *buf;
int fd;
@@ -61,26 +63,6 @@ static const uint32_t buztbl[] = {
0x8dfd4d53,0xc4d0c087,0x31dfb5ca,0xa44589b5,0x6b637e2e,0x663f6b45,0xd2d8baa0,0x1dac7e4c
};
-static ssize_t
-xread(int fd, void *buf, size_t nbytes)
-{
- unsigned char *bp = buf;
- ssize_t total = 0;
-
- while (nbytes > 0) {
- ssize_t n;
-
- n = read(fd, &bp[total], nbytes);
- if (n < 0)
- return -1;
- else if (n == 0)
- return total;
- total += n;
- nbytes -= n;
- }
- return total;
-}
-
/* Buzhash: https://en.wikipedia.org/wiki/Rolling_hash#Cyclic_polynomial */
static inline uint32_t
hinit(unsigned char *buf, size_t size)
DIR diff --git a/dup-unpack.c b/dup-unpack.c
@@ -12,29 +12,11 @@
#include "config.h"
#include "snap.h"
+extern ssize_t xwrite(int fd, void *buf, size_t nbytes);
+
int verbose;
char *argv0;
-static ssize_t
-xwrite(int fd, void *buf, size_t nbytes)
-{
- unsigned char *bp = buf;
- ssize_t total = 0;
-
- while (nbytes > 0) {
- ssize_t n;
-
- n = write(fd, &bp[total], nbytes);
- if (n < 0)
- return -1;
- else if (n == 0)
- return total;
- total += n;
- nbytes -= n;
- }
- return total;
-}
-
static int
unpack(struct sctx *sctx, struct bctx *bctx)
{
DIR diff --git a/misc.c b/misc.c
@@ -0,0 +1,43 @@
+#include <sys/types.h>
+
+#include <unistd.h>
+
+ssize_t
+xread(int fd, void *buf, size_t nbytes)
+{
+ unsigned char *bp = buf;
+ ssize_t total = 0;
+
+ while (nbytes > 0) {
+ ssize_t n;
+
+ n = read(fd, &bp[total], nbytes);
+ if (n < 0)
+ return -1;
+ else if (n == 0)
+ return total;
+ total += n;
+ nbytes -= n;
+ }
+ return total;
+}
+
+ssize_t
+xwrite(int fd, void *buf, size_t nbytes)
+{
+ unsigned char *bp = buf;
+ ssize_t total = 0;
+
+ while (nbytes > 0) {
+ ssize_t n;
+
+ n = write(fd, &bp[total], nbytes);
+ if (n < 0)
+ return -1;
+ else if (n == 0)
+ return total;
+ total += n;
+ nbytes -= n;
+ }
+ return total;
+}
DIR diff --git a/snap.c b/snap.c
@@ -14,6 +14,9 @@
#include "queue.h"
#include "snap.h"
+extern ssize_t xread(int fd, void *buf, size_t nbytes);
+extern ssize_t xwrite(int fd, void *buf, size_t nbytes);
+
struct mdnode {
unsigned char md[MDSIZE];
SLIST_ENTRY(mdnode) e;
@@ -26,46 +29,6 @@ struct sctx {
int rdonly;
};
-static ssize_t
-xread(int fd, void *buf, size_t nbytes)
-{
- uint8_t *bp = buf;
- ssize_t total = 0;
-
- while (nbytes > 0) {
- ssize_t n;
-
- n = read(fd, &bp[total], nbytes);
- if (n < 0)
- return -1;
- else if (n == 0)
- return total;
- total += n;
- nbytes -= n;
- }
- return total;
-}
-
-static ssize_t
-xwrite(int fd, void *buf, size_t nbytes)
-{
- uint8_t *bp = buf;
- ssize_t total = 0;
-
- while (nbytes > 0) {
- ssize_t n;
-
- n = write(fd, &bp[total], nbytes);
- if (n < 0)
- return -1;
- else if (n == 0)
- return total;
- total += n;
- nbytes -= n;
- }
- return total;
-}
-
static int
loadmd(struct sctx *sctx)
{