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correct largefile support, add comments about it.

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This commit is contained in:
Denis Vlasenko 2006-10-08 17:54:47 +00:00
parent 1385899416
commit 7039a66b58
15 changed files with 121 additions and 91 deletions
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2
Makefile.flags
View File

@ -9,7 +9,7 @@ CPPFLAGS += \
$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) -I$(srctree)/libbb \
-include include/autoconf.h \
-D_GNU_SOURCE -DNDEBUG \
-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 \
$(if $(CONFIG_LFS),-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64) \
-D"BB_VER=KBUILD_STR($(BB_VER))" -DBB_BT=AUTOCONF_TIMESTAMP \
-Wall -Wstrict-prototypes -Wshadow -Werror \
-funsigned-char -fno-builtin-strlen -finline-limit=0 -static-libgcc \

2
archival/tar.c
View File

@ -376,7 +376,7 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf,
/* If it was a regular file, write out the body */
if (inputFileFd >= 0) {
ssize_t readSize = 0;
off_t readSize = 0;
/* write the file to the archive */
readSize = bb_copyfd_eof(inputFileFd, tbInfo->tarFd);

5
archival/unzip.c
View File

@ -51,7 +51,6 @@ typedef union {
} formatted ATTRIBUTE_PACKED;
} zip_header_t;
/* This one never works with LARGEFILE-sized skips */
static void unzip_skip(int fd, off_t skip)
{
if (lseek(fd, skip, SEEK_CUR) == (off_t)-1) {
@ -75,7 +74,7 @@ static int unzip_extract(zip_header_t *zip_header, int src_fd, int dst_fd)
{
if (zip_header->formatted.method == 0) {
/* Method 0 - stored (not compressed) */
int size = zip_header->formatted.ucmpsize;
off_t size = zip_header->formatted.ucmpsize;
if (size && (bb_copyfd_size(src_fd, dst_fd, size) != size)) {
bb_error_msg_and_die("cannot complete extraction");
}
@ -202,7 +201,7 @@ int unzip_main(int argc, char **argv)
}
if (src_fd == -1) {
src_fn[orig_src_fn_len] = 0;
bb_error_msg_and_die("Cannot open %s, %s.zip, %s.ZIP", src_fn, src_fn, src_fn);
bb_error_msg_and_die("cannot open %s, %s.zip, %s.ZIP", src_fn, src_fn, src_fn);
}
}

7
coreutils/cat.c
View File

@ -4,7 +4,7 @@
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file License in this tarball for details.
* Licensed under GPLv2, see file License in this tarball for details.
*/
/* BB_AUDIT SUSv3 compliant */
@ -26,8 +26,9 @@ int cat_main(int argc, char **argv)
}
do {
if ((f = bb_wfopen_input(*argv)) != NULL) {
int r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
f = bb_wfopen_input(*argv);
if (f) {
off_t r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
bb_fclose_nonstdin(f);
if (r >= 0) {
continue;

2
coreutils/catv.c
View File

@ -15,7 +15,7 @@
int catv_main(int argc, char **argv)
{
int retval = EXIT_SUCCESS, fd;
unsigned long flags;
unsigned flags;
flags = getopt32(argc, argv, "etv");
#define CATV_OPT_e (1<<0)

16
coreutils/dd.c
View File

@ -25,12 +25,12 @@ static const struct suffix_mult dd_suffixes[] = {
{ NULL, 0 }
};
static FILEOFF_TYPE out_full, out_part, in_full, in_part;
static off_t out_full, out_part, in_full, in_part;
static void dd_output_status(int ATTRIBUTE_UNUSED cur_signal)
{
bb_fprintf(stderr, FILEOFF_FMT"+"FILEOFF_FMT" records in\n"
FILEOFF_FMT"+"FILEOFF_FMT" records out\n",
bb_fprintf(stderr, OFF_FMT"+"OFF_FMT" records in\n"
OFF_FMT"+"OFF_FMT" records out\n",
in_full, in_part,
out_full, out_part);
}
@ -44,7 +44,7 @@ int dd_main(int argc, char **argv)
int flags = trunc_flag;
size_t oc = 0, ibs = 512, obs = 512;
ssize_t n;
FILEOFF_TYPE seek = 0, skip = 0, count = MAX_FILEOFF_TYPE;
off_t seek = 0, skip = 0, count = OFF_T_MAX;
int oflag, ifd, ofd;
const char *infile = NULL, *outfile = NULL;
char *ibuf, *obuf;
@ -108,14 +108,14 @@ int dd_main(int argc, char **argv)
obuf = ibuf;
if (infile != NULL)
ifd = xopen(infile, O_RDONLY | (O_LARGEFILE * ENABLE_LFS));
ifd = xopen(infile, O_RDONLY);
else {
ifd = STDIN_FILENO;
infile = bb_msg_standard_input;
}
if (outfile != NULL) {
oflag = O_WRONLY | O_CREAT | (O_LARGEFILE * ENABLE_LFS);
oflag = O_WRONLY | O_CREAT;
if (!seek && (flags & trunc_flag))
oflag |= O_TRUNC;
@ -137,7 +137,7 @@ int dd_main(int argc, char **argv)
}
if (skip) {
if (LSEEK(ifd, skip * ibs, SEEK_CUR) < 0) {
if (lseek(ifd, skip * ibs, SEEK_CUR) < 0) {
while (skip-- > 0) {
n = safe_read(ifd, ibuf, ibs);
if (n < 0)
@ -149,7 +149,7 @@ int dd_main(int argc, char **argv)
}
if (seek) {
if (LSEEK(ofd, seek * obs, SEEK_CUR) < 0)
if (lseek(ofd, seek * obs, SEEK_CUR) < 0)
goto die_outfile;
}

4
e2fsprogs/chattr.c
View File

@ -112,9 +112,9 @@ static int chattr_dir_proc(const char *, struct dirent *, void *);
static void change_attributes(const char * name)
{
unsigned long fsflags;
STRUCT_STAT st;
struct stat st;
if (LSTAT(name, &st) == -1) {
if (lstat(name, &st) == -1) {
bb_error_msg("stat %s failed", name);
return;
}

8
e2fsprogs/lsattr.c
View File

@ -72,9 +72,9 @@ static int lsattr_dir_proc(const char *, struct dirent *, void *);
static void lsattr_args(const char *name)
{
STRUCT_STAT st;
struct stat st;
if (LSTAT(name, &st) == -1) {
if (lstat(name, &st) == -1) {
bb_perror_msg("stating %s", name);
} else {
if (S_ISDIR(st.st_mode) && !(flags & OPT_DIRS_OPT))
@ -87,12 +87,12 @@ static void lsattr_args(const char *name)
static int lsattr_dir_proc(const char *dir_name, struct dirent *de,
void *private)
{
STRUCT_STAT st;
struct stat st;
char *path;
path = concat_path_file(dir_name, de->d_name);
if (LSTAT(path, &st) == -1)
if (lstat(path, &st) == -1)
bb_perror_msg(path);
else {
if (de->d_name[0] != '.' || (flags & OPT_ALL)) {

6
e2fsprogs/util.c
View File

@ -33,12 +33,12 @@ void proceed_question(void)
void check_plausibility(const char *device, int force)
{
int val;
STRUCT_STAT s;
val = STAT(device, &s);
struct stat s;
val = stat(device, &s);
if (force)
return;
if(val == -1)
bb_perror_msg_and_die("Could not stat %s", device);
bb_perror_msg_and_die("cannot stat %s", device);
if (!S_ISBLK(s.st_mode)) {
printf("%s is not a block special device.\n", device);
proceed_question();

68
include/libbb.h
View File

@ -61,30 +61,56 @@
#define PATH_MAX 256
#endif
/* Not (yet) used, but tested to work correctly
#define MAXINT(T) (T)( \
((T)-1) > 0 \
? (T)-1 \
: (T)~((T)1 << (sizeof(T)*8-1)) \
)
#define MININT(T) (T)( \
((T)-1) > 0 \
? (T)0 \
: ((T)1 << (sizeof(T)*8-1)) \
)
*/
/* Large file support */
#ifdef CONFIG_LFS
# define FILEOFF_TYPE off64_t
# define FILEOFF_FMT "%lld"
# define LSEEK lseek64
# define STAT stat64
# define LSTAT lstat64
# define STRUCT_STAT struct stat64
# define STRTOOFF strtoll
# define SAFE_STRTOOFF safe_strtoll
#else
# define FILEOFF_TYPE off_t
# define FILEOFF_FMT "%ld"
# define LSEEK lseek
# define STAT stat
# define LSTAT lstat
# define STRUCT_STAT struct stat
/* Note that CONFIG_LFS forces bbox to be built with all common ops
* (stat, lseek etc) mapped to "largefile" variants by libc.
* Practically it means that open() automatically has O_LARGEFILE added
* and all filesize/file_offset parameters and struct members are "large"
* (in today's world - signed 64bit). For full support of large files,
* we need a few helper #defines (below) and careful use of off_t
* instead of int/ssize_t. No lseek64(), O_LARGEFILE etc necessary */
#if ENBALE_LFS
/* CONFIG_LFS is on */
# if ULONG_MAX > 0xffffffff
/* "long" is long enough on this system */
# define STRTOOFF strtol
# define SAFE_STRTOOFF safe_strtol
/* Do we need to undefine O_LARGEFILE? */
# define OFF_FMT "%ld"
# else
/* "long" is too short, need "lomg long" */
# define STRTOOFF strtoll
# define SAFE_STRTOOFF safe_strtoll
# define OFF_FMT "%lld"
# endif
#else
# if 0 /* UINT_MAX == 0xffffffff */
/* Doesn't work. off_t is a long. gcc will throw warnings on printf("%d", off_t)
* even if long==int on this arch. Crap... */
# define STRTOOFF strtol
# define SAFE_STRTOOFF safe_strtoi
# define OFF_FMT "%d"
# else
# define STRTOOFF strtol
# define SAFE_STRTOOFF safe_strtol
# define OFF_FMT "%ld"
# endif
#endif
/* scary. better ideas? (but do *test* them first!) */
#define MAX_FILEOFF_TYPE \
((FILEOFF_TYPE)~((FILEOFF_TYPE)1 << (sizeof(FILEOFF_TYPE)*8-1)))
#define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1)))
/* Some useful definitions */
#undef FALSE
@ -203,8 +229,8 @@ extern char *find_block_device(char *path);
extern char *bb_get_line_from_file(FILE *file);
extern char *bb_get_chomped_line_from_file(FILE *file);
extern char *bb_get_chunk_from_file(FILE *file, int *end);
extern int bb_copyfd_size(int fd1, int fd2, const off_t size);
extern int bb_copyfd_eof(int fd1, int fd2);
extern off_t bb_copyfd_size(int fd1, int fd2, off_t size);
extern off_t bb_copyfd_eof(int fd1, int fd2);
extern char bb_process_escape_sequence(const char **ptr);
extern char *bb_get_last_path_component(char *path);
extern FILE *bb_wfopen(const char *path, const char *mode);

10
libbb/copyfd.c
View File

@ -21,10 +21,10 @@
#endif
static ssize_t bb_full_fd_action(int src_fd, int dst_fd, size_t size)
static off_t bb_full_fd_action(int src_fd, int dst_fd, off_t size)
{
int status = -1;
size_t total = 0;
off_t total = 0;
RESERVE_CONFIG_BUFFER(buffer,BUFSIZ);
if (src_fd < 0) goto out;
@ -56,11 +56,11 @@ static ssize_t bb_full_fd_action(int src_fd, int dst_fd, size_t size)
out:
RELEASE_CONFIG_BUFFER(buffer);
return status ? status : (ssize_t)total;
return status ? status : total;
}
int bb_copyfd_size(int fd1, int fd2, const off_t size)
off_t bb_copyfd_size(int fd1, int fd2, off_t size)
{
if (size) {
return bb_full_fd_action(fd1, fd2, size);
@ -68,7 +68,7 @@ int bb_copyfd_size(int fd1, int fd2, const off_t size)
return 0;
}
int bb_copyfd_eof(int fd1, int fd2)
off_t bb_copyfd_eof(int fd1, int fd2)
{
return bb_full_fd_action(fd1, fd2, 0);
}

4
libbb/loop.c
View File

@ -133,7 +133,9 @@ int set_loop(char **device, const char *file, unsigned long long offset)
without using losetup manually is problematic.)
*/
} else if (strcmp(file,(char *)loopinfo.lo_file_name)
|| offset!=loopinfo.lo_offset) rc = -1;
|| offset != loopinfo.lo_offset) {
rc = -1;
}
close(dfd);
try_again:
if (*device) break;

20
networking/ftpgetput.c
View File

@ -104,9 +104,11 @@ static FILE *ftp_login(ftp_host_info_t *server)
}
#if !ENABLE_FTPGET
#define ftp_receive 0
int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
const char *local_path, char *server_path);
#else
static int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
static
int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
const char *local_path, char *server_path)
{
char buf[512];
@ -122,10 +124,8 @@ static int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
fd_data = xconnect_ftpdata(server, buf);
if (ftpcmd("SIZE ", server_path, control_stream, buf) == 213) {
unsigned long value=filesize;
if (safe_strtoul(buf + 4, &value))
if (SAFE_STRTOOFF(buf + 4, &filesize))
bb_error_msg_and_die("SIZE error: %s", buf + 4);
filesize = value;
} else {
filesize = -1;
do_continue = 0;
@ -139,7 +139,7 @@ static int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
if (do_continue) {
struct stat sbuf;
if (lstat(local_path, &sbuf) < 0) {
bb_perror_msg_and_die("fstat()");
bb_perror_msg_and_die("lstat");
}
if (sbuf.st_size > 0) {
beg_range = sbuf.st_size;
@ -149,7 +149,7 @@ static int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
}
if (do_continue) {
sprintf(buf, "REST %ld", (long)beg_range);
sprintf(buf, "REST "OFF_FMT, beg_range);
if (ftpcmd(buf, NULL, control_stream, buf) != 350) {
do_continue = 0;
} else {
@ -191,9 +191,11 @@ static int ftp_receive(ftp_host_info_t *server, FILE *control_stream,
#endif
#if !ENABLE_FTPPUT
#define ftp_send 0
int ftp_send(ftp_host_info_t *server, FILE *control_stream,
const char *server_path, char *local_path);
#else
static int ftp_send(ftp_host_info_t *server, FILE *control_stream,
static
int ftp_send(ftp_host_info_t *server, FILE *control_stream,
const char *server_path, char *local_path)
{
struct stat sbuf;

4
networking/httpd.c
View File

@ -919,8 +919,8 @@ static int sendHeaders(HttpResponseNum responseNum)
if (config->ContentLength != -1) { /* file */
strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
len += sprintf(buf+len, "Last-Modified: %s\r\n%s "FILEOFF_FMT"\r\n",
timeStr, Content_length, (FILEOFF_TYPE) config->ContentLength);
len += sprintf(buf+len, "Last-Modified: %s\r\n%s "OFF_FMT"\r\n",
timeStr, Content_length, (off_t) config->ContentLength);
}
strcat(buf, "\r\n");
len += 2;

24
networking/wget.c
View File

@ -29,9 +29,9 @@ static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf);
/* Globals (can be accessed from signal handlers */
static FILEOFF_TYPE content_len; /* Content-length of the file */
static FILEOFF_TYPE beg_range; /* Range at which continue begins */
static FILEOFF_TYPE transferred; /* Number of bytes transferred so far */
static off_t content_len; /* Content-length of the file */
static off_t beg_range; /* Range at which continue begins */
static off_t transferred; /* Number of bytes transferred so far */
static int chunked; /* chunked transfer encoding */
#ifdef CONFIG_FEATURE_WGET_STATUSBAR
static void progressmeter(int flag);
@ -215,10 +215,10 @@ int wget_main(int argc, char **argv)
opt |= WGET_OPT_QUIET;
opt &= ~WGET_OPT_CONTINUE;
} else if (opt & WGET_OPT_CONTINUE) {
output_fd = open(fname_out, O_WRONLY|O_LARGEFILE);
output_fd = open(fname_out, O_WRONLY);
if (output_fd >= 0) {
beg_range = LSEEK(output_fd, 0, SEEK_END);
if (beg_range == (FILEOFF_TYPE)-1)
beg_range = lseek(output_fd, 0, SEEK_END);
if (beg_range == (off_t)-1)
bb_perror_msg_and_die("lseek");
}
/* File doesn't exist. We do not create file here yet.
@ -282,7 +282,7 @@ int wget_main(int argc, char **argv)
#endif
if (beg_range)
fprintf(sfp, "Range: bytes="FILEOFF_FMT"-\r\n", beg_range);
fprintf(sfp, "Range: bytes="OFF_FMT"-\r\n", beg_range);
if(extra_headers_left < sizeof(extra_headers))
fputs(extra_headers,sfp);
fprintf(sfp,"Connection: close\r\n\r\n");
@ -413,7 +413,7 @@ read_response:
dfp = open_socket(&s_in);
if (beg_range) {
sprintf(buf, "REST "FILEOFF_FMT, beg_range);
sprintf(buf, "REST "OFF_FMT, beg_range);
if (ftpcmd(buf, NULL, sfp, buf) == 350)
content_len -= beg_range;
}
@ -435,7 +435,7 @@ read_response:
/* Do it before progressmeter (want to have nice error message) */
if (output_fd < 0)
output_fd = xopen3(fname_out,
O_WRONLY|O_CREAT|O_EXCL|O_TRUNC|O_LARGEFILE, 0666);
O_WRONLY|O_CREAT|O_EXCL|O_TRUNC, 0666);
if (!(opt & WGET_OPT_QUIET))
progressmeter(-1);
@ -685,10 +685,10 @@ static void
progressmeter(int flag)
{
static struct timeval lastupdate;
static FILEOFF_TYPE lastsize, totalsize;
static off_t lastsize, totalsize;
struct timeval now, td, tvwait;
FILEOFF_TYPE abbrevsize;
off_t abbrevsize;
int elapsed, ratio, barlength, i;
char buf[256];
@ -739,7 +739,7 @@ progressmeter(int flag)
if (tvwait.tv_sec >= STALLTIME) {
fprintf(stderr, " - stalled -");
} else {
FILEOFF_TYPE to_download = totalsize - beg_range;
off_t to_download = totalsize - beg_range;
if (transferred <= 0 || elapsed <= 0 || transferred > to_download || chunked) {
fprintf(stderr, "--:--:-- ETA");
} else {