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-rw-r--r--archival/libunarchive/get_header_tar.c40
-rw-r--r--archival/tar.c107
2 files changed, 75 insertions, 72 deletions
diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c
index fcddcb834..01c10433e 100644
--- a/archival/libunarchive/get_header_tar.c
+++ b/archival/libunarchive/get_header_tar.c
@@ -118,34 +118,10 @@ static char *get_selinux_sctx_from_pax_hdr(archive_handle_t *archive_handle, uns
}
#endif
-void BUG_tar_header_size(void);
char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
{
file_header_t *file_header = archive_handle->file_header;
- struct {
- /* ustar header, Posix 1003.1 */
- char name[100]; /* 0-99 */
- char mode[8]; /* 100-107 */
- char uid[8]; /* 108-115 */
- char gid[8]; /* 116-123 */
- char size[12]; /* 124-135 */
- char mtime[12]; /* 136-147 */
- char chksum[8]; /* 148-155 */
- char typeflag; /* 156-156 */
- char linkname[100]; /* 157-256 */
- /* POSIX: "ustar" NUL "00" */
- /* GNU tar: "ustar " NUL */
- /* Normally it's defined as magic[6] followed by
- * version[2], but we put them together to simplify code
- */
- char magic[8]; /* 257-264 */
- char uname[32]; /* 265-296 */
- char gname[32]; /* 297-328 */
- char devmajor[8]; /* 329-336 */
- char devminor[8]; /* 337-344 */
- char prefix[155]; /* 345-499 */
- char padding[12]; /* 500-512 */
- } tar;
+ struct tar_header_t tar;
char *cp;
int i, sum_u, sum;
#if ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY
@@ -162,9 +138,6 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
# define p_linkname 0
#endif
- if (sizeof(tar) != 512)
- BUG_tar_header_size();
-
#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS || ENABLE_FEATURE_TAR_SELINUX
again:
#endif
@@ -230,18 +203,21 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
* we can switch to get_header_tar_gz/bz2/lzma().
* Needs seekable fd. I wish recv(MSG_PEEK) works
* on any fd... */
-#if ENABLE_FEATURE_SEAMLESS_GZ
+# if ENABLE_FEATURE_SEAMLESS_GZ
if (tar.name[0] == 0x1f && tar.name[1] == (char)0x8b) { /* gzip */
get_header_ptr = get_header_tar_gz;
} else
-#endif
-#if ENABLE_FEATURE_SEAMLESS_BZ2
+# endif
+# if ENABLE_FEATURE_SEAMLESS_BZ2
if (tar.name[0] == 'B' && tar.name[1] == 'Z'
&& tar.name[2] == 'h' && isdigit(tar.name[3])
) { /* bzip2 */
get_header_ptr = get_header_tar_bz2;
} else
-#endif
+# endif
+# if ENABLE_FEATURE_SEAMLESS_XZ
+ //TODO
+# endif
goto err;
/* Two different causes for lseek() != 0:
* unseekable fd (would like to support that too, but...),
diff --git a/archival/tar.c b/archival/tar.c
index 344c9dea4..f49fb129e 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -48,37 +48,6 @@
#if ENABLE_FEATURE_TAR_CREATE
-/* Tar file constants */
-
-#define TAR_BLOCK_SIZE 512
-
-/* POSIX tar Header Block, from POSIX 1003.1-1990 */
-#define NAME_SIZE 100
-#define NAME_SIZE_STR "100"
-typedef struct TarHeader { /* byte offset */
- char name[NAME_SIZE]; /* 0-99 */
- char mode[8]; /* 100-107 */
- char uid[8]; /* 108-115 */
- char gid[8]; /* 116-123 */
- char size[12]; /* 124-135 */
- char mtime[12]; /* 136-147 */
- char chksum[8]; /* 148-155 */
- char typeflag; /* 156-156 */
- char linkname[NAME_SIZE]; /* 157-256 */
- /* POSIX: "ustar" NUL "00" */
- /* GNU tar: "ustar " NUL */
- /* Normally it's defined as magic[6] followed by
- * version[2], but we put them together to save code.
- */
- char magic[8]; /* 257-264 */
- char uname[32]; /* 265-296 */
- char gname[32]; /* 297-328 */
- char devmajor[8]; /* 329-336 */
- char devminor[8]; /* 337-344 */
- char prefix[155]; /* 345-499 */
- char padding[12]; /* 500-512 (pad to exactly TAR_BLOCK_SIZE) */
-} TarHeader;
-
/*
** writeTarFile(), writeFileToTarball(), and writeTarHeader() are
** the only functions that deal with the HardLinkInfo structure.
@@ -193,7 +162,7 @@ static void putOctal(char *cp, int len, off_t value)
}
#define PUT_OCTAL(a, b) putOctal((a), sizeof(a), (b))
-static void chksum_and_xwrite(int fd, struct TarHeader* hp)
+static void chksum_and_xwrite(int fd, struct tar_header_t* hp)
{
/* POSIX says that checksum is done on unsigned bytes
* (Sun and HP-UX gets it wrong... more details in
@@ -235,7 +204,7 @@ static void writeLongname(int fd, int type, const char *name, int dir)
"00000000000",
"00000000000",
};
- struct TarHeader header;
+ struct tar_header_t header;
int size;
dir = !!dir; /* normalize: 0/1 */
@@ -262,17 +231,13 @@ static void writeLongname(int fd, int type, const char *name, int dir)
#endif
/* Write out a tar header for the specified file/directory/whatever */
-void BUG_tar_header_size(void);
static int writeTarHeader(struct TarBallInfo *tbInfo,
const char *header_name, const char *fileName, struct stat *statbuf)
{
- struct TarHeader header;
-
- if (sizeof(header) != 512)
- BUG_tar_header_size();
-
- memset(&header, 0, sizeof(struct TarHeader));
+ struct tar_header_t header;
+ memset(&header, 0, sizeof(header));
+
strncpy(header.name, header_name, sizeof(header.name));
/* POSIX says to mask mode with 07777. */
@@ -738,6 +703,68 @@ static void handle_SIGCHLD(int status)
}
#endif
+//usage:#define tar_trivial_usage
+//usage: "-[" IF_FEATURE_TAR_CREATE("c") "xt" IF_FEATURE_SEAMLESS_GZ("z")
+//usage: IF_FEATURE_SEAMLESS_BZ2("j") IF_FEATURE_SEAMLESS_LZMA("a")
+//usage: IF_FEATURE_SEAMLESS_Z("Z") IF_FEATURE_TAR_NOPRESERVE_TIME("m") "vO] "
+//usage: IF_FEATURE_TAR_FROM("[-X FILE] ")
+//usage: "[-f TARFILE] [-C DIR] [FILE]..."
+//usage:#define tar_full_usage "\n\n"
+//usage: IF_FEATURE_TAR_CREATE("Create, extract, ")
+//usage: IF_NOT_FEATURE_TAR_CREATE("Extract ")
+//usage: "or list files from a tar file\n"
+//usage: "\nOperation:"
+//usage: IF_FEATURE_TAR_CREATE(
+//usage: "\n c Create"
+//usage: )
+//usage: "\n x Extract"
+//usage: "\n t List"
+//usage: "\nOptions:"
+//usage: "\n f Name of TARFILE ('-' for stdin/out)"
+//usage: "\n C Change to DIR before operation"
+//usage: "\n v Verbose"
+//usage: IF_FEATURE_SEAMLESS_GZ(
+//usage: "\n z (De)compress using gzip"
+//usage: )
+//usage: IF_FEATURE_SEAMLESS_BZ2(
+//usage: "\n j (De)compress using bzip2"
+//usage: )
+//usage: IF_FEATURE_SEAMLESS_LZMA(
+//usage: "\n a (De)compress using lzma"
+//usage: )
+//usage: IF_FEATURE_SEAMLESS_Z(
+//usage: "\n Z (De)compress using compress"
+//usage: )
+//usage: "\n O Extract to stdout"
+//usage: IF_FEATURE_TAR_CREATE(
+//usage: "\n h Follow symlinks"
+//usage: )
+//usage: IF_FEATURE_TAR_NOPRESERVE_TIME(
+//usage: "\n m Don't restore mtime"
+//usage: )
+//usage: IF_FEATURE_TAR_FROM(
+//usage: IF_FEATURE_TAR_LONG_OPTIONS(
+//usage: "\n exclude File to exclude"
+//usage: )
+//usage: "\n X File with names to exclude"
+//usage: "\n T File with names to include"
+//usage: )
+//usage:
+//usage:#define tar_example_usage
+//usage: "$ zcat /tmp/tarball.tar.gz | tar -xf -\n"
+//usage: "$ tar -cf /tmp/tarball.tar /usr/local\n"
+
+// Supported but aren't in --help:
+// o no-same-owner
+// p same-permissions
+// k keep-old
+// numeric-owner
+// no-same-permissions
+// overwrite
+//IF_FEATURE_TAR_TO_COMMAND(
+// to-command
+//)
+
enum {
OPTBIT_KEEP_OLD = 8,
IF_FEATURE_TAR_CREATE( OPTBIT_CREATE ,)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 08:38:11 +0000