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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2008-02-19 11:26:28 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2008-02-19 11:26:28 +0000 |
| commit | 431a7c9c53b69a7416091721da673bcff7c91a02 (patch) | |
| tree | 03cbe0e15af01d82b05138f0db41d44179262a3f /archival/tar.c | |
| parent | a37e7134f76b7661b86bb9cc926f28f81b1e1109 (diff) | |
| download | busybox-431a7c9c53b69a7416091721da673bcff7c91a02.tar.gz | |
tar: optional autodetection of gz/bz2 compressed tarballs.
+130 bytes. Closes bug 992.
Diffstat (limited to 'archival/tar.c')
| -rw-r--r-- | archival/tar.c | 35 |
1 files changed, 26 insertions, 9 deletions
diff --git a/archival/tar.c b/archival/tar.c index 4ec454b88..e790f28ea 100644 --- a/archival/tar.c +++ b/archival/tar.c @@ -33,8 +33,17 @@ #define FNM_LEADING_DIR 0 #endif + #define block_buf bb_common_bufsiz1 + +#if !ENABLE_FEATURE_TAR_GZIP && !ENABLE_FEATURE_TAR_BZIP2 +/* Do not pass gzip flag to writeTarFile() */ +#define writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude, gzip) \ + writeTarFile(tar_fd, verboseFlag, dereferenceFlag, include, exclude) +#endif + + #if ENABLE_FEATURE_TAR_CREATE /* Tar file constants */ @@ -514,18 +523,23 @@ static int writeTarFile(const int tar_fd, const int verboseFlag, if (fstat(tbInfo.tarFd, &tbInfo.statBuf) < 0) bb_perror_msg_and_die("cannot stat tar file"); - if ((ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2) && gzip) { -// On Linux, vfork never unpauses parent early, although standard -// allows for that. Do we want to waste bytes checking for it? +#if ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2 + if (gzip) { +#if ENABLE_FEATURE_TAR_GZIP && ENABLE_FEATURE_TAR_BZIP2 + const char *zip_exec = (gzip == 1) ? "gzip" : "bzip2"; +#elif ENABLE_FEATURE_TAR_GZIP + const char *zip_exec = "gzip"; +#else /* only ENABLE_FEATURE_TAR_BZIP2 */ + const char *zip_exec = "bzip2"; +#endif + // On Linux, vfork never unpauses parent early, although standard + // allows for that. Do we want to waste bytes checking for it? #define WAIT_FOR_CHILD 0 - volatile int vfork_exec_errno = 0; #if WAIT_FOR_CHILD struct fd_pair gzipStatusPipe; #endif struct fd_pair gzipDataPipe; - const char *zip_exec = (gzip == 1) ? "gzip" : "bzip2"; - xpiped_pair(gzipDataPipe); #if WAIT_FOR_CHILD xpiped_pair(gzipStatusPipe); @@ -584,6 +598,7 @@ static int writeTarFile(const int tar_fd, const int verboseFlag, bb_perror_msg_and_die("cannot exec %s", zip_exec); } } +#endif tbInfo.excludeList = exclude; @@ -934,11 +949,13 @@ int tar_main(int argc, char **argv) /* create an archive */ if (opt & OPT_CREATE) { +#if ENABLE_FEATURE_TAR_GZIP || ENABLE_FEATURE_TAR_BZIP2 int zipMode = 0; - if (ENABLE_FEATURE_TAR_GZIP && get_header_ptr == get_header_tar_gz) + if (ENABLE_FEATURE_TAR_GZIP && (opt & OPT_GZIP)) zipMode = 1; - if (ENABLE_FEATURE_TAR_BZIP2 && get_header_ptr == get_header_tar_bz2) + if (ENABLE_FEATURE_TAR_BZIP2 && (opt & OPT_BZIP2)) zipMode = 2; +#endif /* NB: writeTarFile() closes tar_handle->src_fd */ return writeTarFile(tar_handle->src_fd, verboseFlag, opt & OPT_DEREFERENCE, tar_handle->accept, @@ -946,7 +963,7 @@ int tar_main(int argc, char **argv) } while (get_header_ptr(tar_handle) == EXIT_SUCCESS) - /* nothing */; + continue; /* Check that every file that should have been extracted was */ while (tar_handle->accept) { |