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31 lines
1.6 KiB
31 lines
1.6 KiB
7 years ago
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mkfifoat() is available in Android only after API 23. We can't use tar's
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implementation of mkfifioat() since it will use tar's implementation of
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mknodat(). This will cause infinite recursion in file gnu/at-func.c and
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segfault.
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Snippet of backtrace:
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....
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#9 0x000000555559819c in mknodat (fd=-100, file=0x7fb7c90050 "sda", mode=25008, dev=2048) at /home/builder/.termux-build/tar/src/gnu/at-func.c:75
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#10 0x000000555559819c in mknodat (fd=-100, file=0x7fb7c90050 "sda", mode=25008, dev=2048) at /home/builder/.termux-build/tar/src/gnu/at-func.c:75
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#11 0x000000555559819c in mknodat (fd=-100, file=0x7fb7c90050 "sda", mode=25008, dev=2048) at /home/builder/.termux-build/tar/src/gnu/at-func.c:75
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#12 0x000000555559819c in mknodat (fd=-100, file=0x7fb7c90050 "sda", mode=25008, dev=2048) at /home/builder/.termux-build/tar/src/gnu/at-func.c:75
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#13 0x000000555556a9d4 in extract_node (file_name=0x7fb7c90050 "sda", typeflag=52) at /home/builder/.termux-build/tar/src/src/extract.c:1447
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#14 0x0000005555568f38 in extract_archive () at /home/builder/.termux-build/tar/src/src/extract.c:1709
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....
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diff -uNr tar-1.30/src/extract.c tar-1.30.mod/src/extract.c
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--- tar-1.30/src/extract.c 2017-12-16 23:23:12.000000000 +0200
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+++ tar-1.30.mod/src/extract.c 2017-12-25 14:31:31.541886176 +0200
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@@ -42,6 +42,11 @@
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# define fchown(fd, uid, gid) (errno = ENOSYS, -1)
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#endif
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+static int
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+mkfifoat(int fd, const char* path, mode_t mode) {
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+ return mknodat(fd, path, (mode & ~S_IFMT) | S_IFIFO, 0);
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+}
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+
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/* Return true if an error number ERR means the system call is
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supported in this case. */
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static bool
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