Last change
on this file since 3817 was 3320, checked in by Bruno Cornec, 10 years ago |
- Re-add (thanks git BTW) the 2.2.9 branch which had been destroyed in
the move to 3.0
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-
Property svn:eol-style
set to
native
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File size:
1.3 KB
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Rev | Line | |
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[3320] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 4 | */
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| 5 |
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| 6 | #include "libbb.h"
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| 7 | #include "archive.h"
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| 8 |
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| 9 | /* transformer(), more than meets the eye */
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| 10 | /*
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| 11 | * On MMU machine, the transform_prog is removed by macro magic
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| 12 | * in include/archive.h. On NOMMU, transformer is removed.
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| 13 | */
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| 14 | void FAST_FUNC open_transformer(int fd,
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| 15 | IF_DESKTOP(long long) int FAST_FUNC (*transformer)(int src_fd, int dst_fd),
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| 16 | const char *transform_prog)
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| 17 | {
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| 18 | struct fd_pair fd_pipe;
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| 19 | int pid;
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| 20 |
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| 21 | xpiped_pair(fd_pipe);
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| 22 | pid = BB_MMU ? xfork() : xvfork();
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| 23 | if (pid == 0) {
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| 24 | /* Child */
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| 25 | close(fd_pipe.rd); /* we don't want to read from the parent */
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| 26 | // FIXME: error check?
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| 27 | #if BB_MMU
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| 28 | transformer(fd, fd_pipe.wr);
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| 29 | if (ENABLE_FEATURE_CLEAN_UP) {
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| 30 | close(fd_pipe.wr); /* send EOF */
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| 31 | close(fd);
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| 32 | }
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| 33 | /* must be _exit! bug was actually seen here */
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| 34 | _exit(EXIT_SUCCESS);
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| 35 | #else
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| 36 | {
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| 37 | char *argv[4];
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| 38 | xmove_fd(fd, 0);
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| 39 | xmove_fd(fd_pipe.wr, 1);
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| 40 | argv[0] = (char*)transform_prog;
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| 41 | argv[1] = (char*)"-cf";
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| 42 | argv[2] = (char*)"-";
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| 43 | argv[3] = NULL;
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| 44 | BB_EXECVP(transform_prog, argv);
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| 45 | bb_perror_msg_and_die("can't execute '%s'", transform_prog);
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| 46 | }
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| 47 | #endif
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| 48 | /* notreached */
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| 49 | }
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| 50 |
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| 51 | /* parent process */
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| 52 | close(fd_pipe.wr); /* don't want to write to the child */
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| 53 | xmove_fd(fd_pipe.rd, fd);
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| 54 | }
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