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-rw-r--r--lib/common/data_reader_dump.c57
-rw-r--r--lib/tar/Makemodule.am3
-rw-r--r--lib/tar/padd_file.c6
-rw-r--r--lib/tar/write_header.c30
-rw-r--r--lib/tar/write_retry.c35
5 files changed, 28 insertions, 103 deletions
diff --git a/lib/common/data_reader_dump.c b/lib/common/data_reader_dump.c
index d832388..7902c25 100644
--- a/lib/common/data_reader_dump.c
+++ b/lib/common/data_reader_dump.c
@@ -11,33 +11,9 @@
#include <stdio.h>
#include <errno.h>
-static int append_block(FILE *fp, const sqfs_u8 *data, size_t size)
-{
- const sqfs_u8 *ptr = data;
- size_t ret;
-
- while (size > 0) {
- if (ferror(fp)) {
- fputs("writing data block: error writing to file\n",
- stderr);
- }
-
- if (feof(fp)) {
- fputs("writing data block: unexpected end of file\n",
- stderr);
- }
-
- ret = fwrite(ptr, 1, size, fp);
- ptr += ret;
- size -= ret;
- }
-
- return 0;
-}
-
int sqfs_data_reader_dump(const char *name, sqfs_data_reader_t *data,
const sqfs_inode_generic_t *inode,
- FILE *fp, size_t block_size, bool allow_sparse)
+ ostream_t *fp, size_t block_size)
{
size_t i, diff, chunk_size;
sqfs_u64 filesz;
@@ -46,23 +22,12 @@ int sqfs_data_reader_dump(const char *name, sqfs_data_reader_t *data,
sqfs_inode_get_file_size(inode, &filesz);
-#if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 200112L)
- if (allow_sparse) {
- int fd = fileno(fp);
-
- if (ftruncate(fd, filesz))
- goto fail_sparse;
- }
-#else
- allow_sparse = false;
-#endif
-
for (i = 0; i < sqfs_inode_get_file_block_count(inode); ++i) {
diff = (filesz < block_size) ? filesz : block_size;
- if (SQFS_IS_SPARSE_BLOCK(inode->extra[i]) && allow_sparse) {
- if (fseek(fp, diff, SEEK_CUR) < 0)
- goto fail_sparse;
+ if (SQFS_IS_SPARSE_BLOCK(inode->extra[i])) {
+ if (ostream_append_sparse(fp, diff))
+ return -1;
} else {
err = sqfs_data_reader_get_block(data, inode, i,
&chunk_size, &chunk);
@@ -71,7 +36,7 @@ int sqfs_data_reader_dump(const char *name, sqfs_data_reader_t *data,
return -1;
}
- err = append_block(fp, chunk, chunk_size);
+ err = ostream_append(fp, chunk, chunk_size);
free(chunk);
if (err)
@@ -89,16 +54,12 @@ int sqfs_data_reader_dump(const char *name, sqfs_data_reader_t *data,
return -1;
}
- if (append_block(fp, chunk, chunk_size)) {
- free(chunk);
- return -1;
- }
-
+ err = ostream_append(fp, chunk, chunk_size);
free(chunk);
+
+ if (err)
+ return -1;
}
return 0;
-fail_sparse:
- perror("creating sparse output file");
- return -1;
}
diff --git a/lib/tar/Makemodule.am b/lib/tar/Makemodule.am
index fe18895..7ba0454 100644
--- a/lib/tar/Makemodule.am
+++ b/lib/tar/Makemodule.am
@@ -3,8 +3,7 @@ libtar_a_SOURCES += lib/tar/number.c lib/tar/checksum.c lib/tar/cleanup.c
libtar_a_SOURCES += lib/tar/read_sparse_map.c lib/tar/read_sparse_map_old.c
libtar_a_SOURCES += lib/tar/base64.c lib/tar/urldecode.c lib/tar/internal.h
libtar_a_SOURCES += lib/tar/padd_file.c lib/tar/read_retry.c include/tar.h
-libtar_a_SOURCES += lib/tar/write_retry.c lib/tar/pax_header.c
-libtar_a_SOURCES += lib/tar/read_sparse_map_new.c
+libtar_a_SOURCES += lib/tar/pax_header.c lib/tar/read_sparse_map_new.c
libtar_a_CFLAGS = $(AM_CFLAGS)
libtar_a_CPPFLAGS = $(AM_CPPFLAGS)
diff --git a/lib/tar/padd_file.c b/lib/tar/padd_file.c
index dd945a3..1173096 100644
--- a/lib/tar/padd_file.c
+++ b/lib/tar/padd_file.c
@@ -10,7 +10,7 @@
#include <stdlib.h>
#include <stdio.h>
-int padd_file(FILE *fp, sqfs_u64 size)
+int padd_file(ostream_t *fp, sqfs_u64 size)
{
size_t padd_sz = size % TAR_RECORD_SIZE;
int status = -1;
@@ -25,10 +25,8 @@ int padd_file(FILE *fp, sqfs_u64 size)
if (buffer == NULL)
goto fail_errno;
- if (write_retry("padding output file to block size",
- fp, buffer, padd_sz)) {
+ if (ostream_append(fp, buffer, padd_sz))
goto out;
- }
status = 0;
out:
diff --git a/lib/tar/write_header.c b/lib/tar/write_header.c
index aaf9f08..3caa1b3 100644
--- a/lib/tar/write_header.c
+++ b/lib/tar/write_header.c
@@ -53,7 +53,7 @@ static void write_number_signed(char *dst, sqfs_s64 value, int digits)
}
}
-static int write_header(FILE *fp, const struct stat *sb, const char *name,
+static int write_header(ostream_t *fp, const struct stat *sb, const char *name,
const char *slink_target, int type)
{
int maj = 0, min = 0;
@@ -88,10 +88,10 @@ static int write_header(FILE *fp, const struct stat *sb, const char *name,
update_checksum(&hdr);
- return write_retry("writing tar header record", fp, &hdr, sizeof(hdr));
+ return ostream_append(fp, &hdr, sizeof(hdr));
}
-static int write_gnu_header(FILE *fp, const struct stat *orig,
+static int write_gnu_header(ostream_t *fp, const struct stat *orig,
const char *payload, size_t payload_len,
int type, const char *name)
{
@@ -104,10 +104,8 @@ static int write_gnu_header(FILE *fp, const struct stat *orig,
if (write_header(fp, &sb, name, NULL, type))
return -1;
- if (write_retry("writing GNU extension header",
- fp, payload, payload_len)) {
+ if (ostream_append(fp, payload, payload_len))
return -1;
- }
return padd_file(fp, payload_len);
}
@@ -136,7 +134,7 @@ static size_t prefix_digit_len(size_t len)
return ndigit;
}
-static int write_schily_xattr(FILE *fp, const struct stat *orig,
+static int write_schily_xattr(ostream_t *fp, const struct stat *orig,
const char *name, const tar_xattr_t *xattr)
{
static const char *prefix = "SCHILY.xattr.";
@@ -161,15 +159,20 @@ static int write_schily_xattr(FILE *fp, const struct stat *orig,
len = strlen(prefix) + strlen(it->key) + it->value_len + 3;
len += prefix_digit_len(len);
- fprintf(fp, PRI_SZ " %s%s=", len, prefix, it->key);
- fwrite(it->value, 1, it->value_len, fp);
- fputc('\n', fp);
+ if (ostream_printf(fp, PRI_SZ " %s%s=",
+ len, prefix, it->key) < 0) {
+ return -1;
+ }
+ if (ostream_append(fp, it->value, it->value_len))
+ return -1;
+ if (ostream_append(fp, "\n", 1))
+ return -1;
}
return padd_file(fp, total_size);
}
-int write_tar_header(FILE *fp, const struct stat *sb, const char *name,
+int write_tar_header(ostream_t *fp, const struct stat *sb, const char *name,
const char *slink_target, const tar_xattr_t *xattr,
unsigned int counter)
{
@@ -228,7 +231,7 @@ out_skip:
return 1;
}
-int write_hard_link(FILE *fp, const struct stat *sb, const char *name,
+int write_hard_link(ostream_t *fp, const struct stat *sb, const char *name,
const char *target, unsigned int counter)
{
tar_header_t hdr;
@@ -274,6 +277,5 @@ int write_hard_link(FILE *fp, const struct stat *sb, const char *name,
write_number(hdr.devminor, 0, sizeof(hdr.devminor));
update_checksum(&hdr);
- return write_retry("writing tar hard link record",
- fp, &hdr, sizeof(hdr));
+ return ostream_append(fp, &hdr, sizeof(hdr));
}
diff --git a/lib/tar/write_retry.c b/lib/tar/write_retry.c
deleted file mode 100644
index f4f3166..0000000
--- a/lib/tar/write_retry.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * write_retry.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include <errno.h>
-#include <stdio.h>
-
-#include "tar.h"
-
-int write_retry(const char *errstr, FILE *fp, const void *data, size_t size)
-{
- size_t ret;
-
- while (size > 0) {
- if (feof(fp)) {
- fprintf(stderr, "%s: write truncated\n", errstr);
- return -1;
- }
-
- if (ferror(fp)) {
- fprintf(stderr, "%s: error writing to file\n", errstr);
- return -1;
- }
-
- ret = fwrite(data, 1, size, fp);
- data = (const char *)data + ret;
- size -= ret;
- }
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-30 13:31:18 +0000