diff options
author | Denys Vlasenko <vda.linux@googlemail.com> | 2010-11-03 04:38:31 +0300 |
---|---|---|
committer | Denys Vlasenko <vda.linux@googlemail.com> | 2010-11-03 04:38:31 +0300 |
commit | 833d4e7f84f59099ee66eabfa3457ebb7d37eaa8 (patch) | |
tree | 3be84e1049707ce8077291065fe3689497c69b9c /archival/libarchive/open_transformer.c | |
parent | 5e9934028aa030312a1a2e2e32d5ceade8672beb (diff) |
rename archival/libunarchive -> archival/libarchive; move bz/ into it
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/libarchive/open_transformer.c')
-rw-r--r-- | archival/libarchive/open_transformer.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/archival/libarchive/open_transformer.c b/archival/libarchive/open_transformer.c new file mode 100644 index 000000000..26ae565f5 --- /dev/null +++ b/archival/libarchive/open_transformer.c @@ -0,0 +1,54 @@ +/* vi: set sw=4 ts=4: */ +/* + * Licensed under GPLv2 or later, see file LICENSE in this source tree. + */ + +#include "libbb.h" +#include "archive.h" + +/* transformer(), more than meets the eye */ +/* + * On MMU machine, the transform_prog is removed by macro magic + * in include/archive.h. On NOMMU, transformer is removed. + */ +void FAST_FUNC open_transformer(int fd, + IF_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd), + const char *transform_prog) +{ + struct fd_pair fd_pipe; + int pid; + + xpiped_pair(fd_pipe); + pid = BB_MMU ? xfork() : xvfork(); + if (pid == 0) { + /* Child */ + close(fd_pipe.rd); /* we don't want to read from the parent */ + // FIXME: error check? +#if BB_MMU + transformer(fd, fd_pipe.wr); + if (ENABLE_FEATURE_CLEAN_UP) { + close(fd_pipe.wr); /* send EOF */ + close(fd); + } + /* must be _exit! bug was actually seen here */ + _exit(EXIT_SUCCESS); +#else + { + char *argv[4]; + xmove_fd(fd, 0); + xmove_fd(fd_pipe.wr, 1); + argv[0] = (char*)transform_prog; + argv[1] = (char*)"-cf"; + argv[2] = (char*)"-"; + argv[3] = NULL; + BB_EXECVP(transform_prog, argv); + bb_perror_msg_and_die("can't execute '%s'", transform_prog); + } +#endif + /* notreached */ + } + + /* parent process */ + close(fd_pipe.wr); /* don't want to write to the child */ + xmove_fd(fd_pipe.rd, fd); +} |