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As we no longer use function pointers for read in common archiving code

Browse Source 
archive_xread can be replaced with bb_full_read, and archive_copy_file
with bb_copyfd*
bb_copyfd is split into two functions bb_copyfd_size and bb_copyfd_eof,
they share a common backend.
This commit is contained in:
Glenn L McGrath 2003-11-21 22:24:57 +00:00
parent 1a2d75fd72
commit 7ffe133864
18 changed files with 55 additions and 148 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
archival/ar.c
View File

@ -59,7 +59,7 @@ static void data_extract_regular_file(archive_handle_t *archive_handle)
file_header = archive_handle->file_header;
dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT);
archive_copy_file(archive_handle, dst_fd);
bb_copyfd_eof(archive_handle->src_fd, dst_fd, file_header->size);
close(dst_fd);
chmod(file_header->name, file_header->mode);

3
archival/libunarchive/Makefile.in
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@ -37,14 +37,11 @@ LIBUNARCHIVE-y:= \
header_list.o \
header_verbose_list.o \
\
archive_xread.o \
archive_xread_all.o \
archive_xread_all_eof.o \
\
seek_by_char.o \
seek_by_jump.o \
\
archive_copy_file.o \
\
data_align.o \
find_list_entry.o \

44
archival/libunarchive/archive_copy_file.c
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@ -1,44 +0,0 @@
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <unistd.h>
#include "libbb.h"
#include "unarchive.h"
extern void archive_copy_file(const archive_handle_t *archive_handle, const int dst_fd)
{
char buffer[512];
off_t chunksize = archive_handle->file_header->size;
while (chunksize != 0) {
size_t size;
if (chunksize > 512) {
size = 512;
} else {
size = chunksize;
}
// archive_xread_all(archive_handle, buffer, size);
size = archive_xread(archive_handle, buffer, size);
if (write(dst_fd, buffer, size) != size) {
bb_error_msg_and_die ("Short write");
}
chunksize -= size;
}
return;
}

33
archival/libunarchive/archive_xread.c
View File

@ -1,33 +0,0 @@
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "unarchive.h"
#include "libbb.h"
extern ssize_t archive_xread(const archive_handle_t *archive_handle, unsigned char *buf, const size_t count)
{
ssize_t size;
size = bb_full_read(archive_handle->src_fd, buf, count);
if (size < 0) {
bb_perror_msg_and_die("Read error");
}
return(size);
}

2
archival/libunarchive/archive_xread_all.c
View File

@ -24,7 +24,7 @@ extern void archive_xread_all(const archive_handle_t *archive_handle, void *buf,
{
ssize_t size;
size = archive_xread(archive_handle, buf, count);
size = bb_full_read(archive_handle->src_fd, buf, count);
if (size != count) {
bb_error_msg_and_die("Short read");
}

2
archival/libunarchive/archive_xread_all_eof.c
View File

@ -24,7 +24,7 @@ extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned
{
ssize_t size;
size = archive_xread(archive_handle, buf, count);
size = bb_full_read(archive_handle->src_fd, buf, count);
if ((size != 0) && (size != count)) {
bb_perror_msg_and_die("Short read, read %d of %d", size, count);
}

2
archival/libunarchive/data_extract_all.c
View File

@ -79,7 +79,7 @@ extern void data_extract_all(archive_handle_t *archive_handle)
case S_IFREG: {
/* Regular file */
dst_fd = bb_xopen(file_header->name, O_WRONLY | O_CREAT | O_EXCL);
archive_copy_file(archive_handle, dst_fd);
bb_copyfd_size(archive_handle->src_fd, dst_fd, file_header->size);
close(dst_fd);
break;
}

2
archival/libunarchive/data_extract_to_stdout.c
View File

@ -18,5 +18,5 @@
extern void data_extract_to_stdout(archive_handle_t *archive_handle)
{
archive_copy_file(archive_handle, fileno(stdout));
bb_copyfd_eof(archive_handle->src_fd, fileno(stdout));
}

2
archival/libunarchive/get_header_tar.c
View File

@ -57,7 +57,7 @@ extern char get_header_tar(archive_handle_t *archive_handle)
/* Align header */
data_align(archive_handle, 512);
if (archive_xread(archive_handle, tar.raw, 512) != 512) {
if (bb_full_read(archive_handle->src_fd, tar.raw, 512) != 512) {
/* Assume end of file */
return(EXIT_FAILURE);
}

16
archival/libunarchive/seek_by_char.c
View File

@ -26,19 +26,7 @@
*/
extern void seek_by_char(const archive_handle_t *archive_handle, const unsigned int jump_size)
{
unsigned int remaining = jump_size;
unsigned int read_amount;
RESERVE_CONFIG_BUFFER(buf, BUFSIZ);
while (remaining > 0) {
if (remaining > BUFSIZ) {
read_amount = BUFSIZ;
} else {
read_amount = remaining;
}
read_amount = archive_xread(archive_handle, buf, read_amount);
remaining -= read_amount;
if (jump_size) {
bb_full_fd_action(archive_handle->src_fd, -1, jump_size, NULL);
}
RELEASE_CONFIG_BUFFER(buf);
}

17
archival/tar.c
View File

@ -414,8 +414,7 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf,
if ((tbInfo->hlInfo == NULL)
&& (S_ISREG(statbuf->st_mode))) {
int inputFileFd;
char buffer[BUFSIZ];
ssize_t size = 0, readSize = 0;
ssize_t readSize = 0;
/* open the file we want to archive, and make sure all is well */
if ((inputFileFd = open(fileName, O_RDONLY)) < 0) {
@ -424,18 +423,8 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf,
}
/* write the file to the archive */
while ((size = bb_full_read(inputFileFd, buffer, sizeof(buffer))) > 0) {
if (bb_full_write(tbInfo->tarFd, buffer, size) != size) {
/* Output file seems to have a problem */
bb_error_msg(bb_msg_io_error, fileName);
return (FALSE);
}
readSize += size;
}
if (size == -1) {
bb_error_msg(bb_msg_io_error, fileName);
return (FALSE);
}
readSize = bb_copyfd_eof(inputFileFd, tbInfo->tarFd);
/* Pad the file up to the tar block size */
for (; (readSize % TAR_BLOCK_SIZE) != 0; readSize++) {
write(tbInfo->tarFd, "\0", 1);

2
coreutils/cat.c
View File

@ -54,7 +54,7 @@ extern int cat_main(int argc, char **argv)
do {
if ((f = bb_wfopen_input(*argv)) != NULL) {
int r = bb_copyfd(fileno(f), STDOUT_FILENO, 0);
int r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
bb_fclose_nonstdin(f);
if (r >= 0) {
continue;

5
include/libbb.h
View File

@ -136,7 +136,8 @@ extern long *find_pid_by_name( const char* pidName);
extern char *find_real_root_device_name(const char* name);
extern char *bb_get_line_from_file(FILE *file);
extern char *bb_get_chomped_line_from_file(FILE *file);
extern int bb_copyfd(int fd1, int fd2, const off_t chunksize);
extern int bb_copyfd_size(int fd1, int fd2, const off_t size);
extern int bb_copyfd_eof(int fd1, int fd2);
extern void bb_xprint_and_close_file(FILE *file);
extern int bb_xprint_file_by_name(const char *filename);
extern char bb_process_escape_sequence(const char **ptr);
@ -480,6 +481,6 @@ extern void xregcomp(regex_t *preg, const char *regex, int cflags);
#define HASH_SHA1 1
#define HASH_MD5 2
extern int hash_fd(int fd, const size_t size, const uint8_t hash_algo, uint8_t *hashval);
extern size_t bb_full_fd_action(int src_fd, int dst_fd, const size_t size, ssize_t (*action)(int fd, const void *, size_t));
#endif /* __LIBCONFIG_H__ */

2
include/unarchive.h
View File

@ -90,12 +90,10 @@ extern char get_header_tar_gz(archive_handle_t *archive_handle);
extern void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount);
extern void seek_by_char(const archive_handle_t *archive_handle, const unsigned int amount);
extern ssize_t archive_xread(const archive_handle_t *archive_handle, unsigned char *buf, const size_t count);
extern void archive_xread_all(const archive_handle_t *archive_handle, void *buf, const size_t count);
extern ssize_t archive_xread_all_eof(archive_handle_t *archive_handle, unsigned char *buf, size_t count);
extern void data_align(archive_handle_t *archive_handle, const unsigned short boundary);
extern void archive_copy_file(const archive_handle_t *archive_handle, const int dst_fd);
extern const llist_t *find_list_entry(const llist_t *list, const char *filename);
extern int uncompressStream(int src_fd, int dst_fd);

2
libbb/copy_file.c
View File

@ -181,7 +181,7 @@ int copy_file(const char *source, const char *dest, int flags)
}
}
if (bb_copyfd(fileno(sfp), fileno(dfp), 0) == -1)
if (bb_copyfd_eof(fileno(sfp), fileno(dfp)) == -1)
status = -1;
if (fclose(dfp) < 0) {

61
libbb/copyfd.c
View File

@ -29,44 +29,55 @@
#define BUFSIZ 4096
#endif
/* If chunksize is 0 copy until EOF */
extern int bb_copyfd(int fd1, int fd2, const off_t chunksize)
/* If size is 0 copy until EOF */
extern size_t bb_full_fd_action(int src_fd, int dst_fd, const size_t size, ssize_t (*action)(int fd, const void *, size_t))
{
ssize_t nread;
size_t size;
off_t remaining;
size_t read_total = 0;
RESERVE_CONFIG_BUFFER(buffer,BUFSIZ);
remaining = size = BUFSIZ;
if (chunksize) {
remaining = chunksize;
}
while ((size == 0) || (read_total < size)) {
size_t read_try;
ssize_t read_actual;
do {
if (size > remaining) {
size = remaining;
if ((size == 0) || (size - read_total > BUFSIZ)) {
read_try = BUFSIZ;
} else {
read_try = size - read_total;
}
if ((nread = safe_read(fd1, buffer, size)) > 0) {
if (bb_full_write(fd2, buffer, nread) < 0) {
read_actual = safe_read(src_fd, buffer, read_try);
if (read_actual > 0) {
if (action && (action(dst_fd, buffer, (size_t) read_actual) != read_actual)) {
bb_perror_msg(bb_msg_write_error); /* match Read error below */
break;
}
if (chunksize && ((remaining -= nread) == 0)) {
return 0;
}
} else if (!nread) {
if (chunksize) {
}
else if (read_actual == 0) {
if (size) {
bb_error_msg("Unable to read all data");
break;
}
return 0;
} else { /* nread < 0 */
bb_perror_msg("Read error"); /* match bb_msg_write_error above */
break;
} else {
/* read_actual < 0 */
bb_perror_msg("Read error");
break;
}
} while (1);
read_total += read_actual;
}
return -1;
RELEASE_CONFIG_BUFFER(buffer);
return(read_total);
}
extern int bb_copyfd_size(int fd1, int fd2, const off_t size)
{
return(bb_full_fd_action(fd1, fd2, size, bb_full_write));
}
extern int bb_copyfd_eof(int fd1, int fd2)
{
return(bb_full_fd_action(fd1, fd2, 0, bb_full_write));
}

2
libbb/print_file.c
View File

@ -28,7 +28,7 @@ extern void bb_xprint_and_close_file(FILE *file)
bb_xfflush_stdout();
/* Note: Do not use STDOUT_FILENO here, as this is a lib routine
* and the calling code may have reassigned stdout. */
if (bb_copyfd(fileno(file), fileno(stdout), 0) == -1) {
if (bb_copyfd_eof(fileno(file), fileno(stdout)) == -1) {
/* bb_copyfd outputs any needed messages, so just die. */
exit(bb_default_error_retval);
}

4
networking/ftpgetput.c
View File

@ -210,7 +210,7 @@ static int ftp_recieve(ftp_host_info_t *server, FILE *control_stream,
}
/* Copy the file */
if (bb_copyfd(fd_data, fd_local, filesize) == -1) {
if (bb_copyfd_size(fd_data, fd_local, filesize) == -1) {
exit(EXIT_FAILURE);
}
@ -272,7 +272,7 @@ static int ftp_send(ftp_host_info_t *server, FILE *control_stream,
}
/* transfer the file */
if (bb_copyfd(fd_local, fd_data, 0) == -1) {
if (bb_copyfd_eof(fd_local, fd_data) == -1) {
exit(EXIT_FAILURE);
}