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599bbd2271
Solaris 9 mknod("name/",mode,dev) mistakenly creates "name" for
non-directory mode. FreeBSD 7.2 mknod("dangling/",mode,dev)
mistakenly creates the target of the symlink if run as root.
FreeBSD and OpenBSD mknod("fifo",S_IFIFO|mode,0) fails for non-root.
Use of mknod caused link failures on mingw.
* modules/mknod: New file.
* m4/mknod.m4 (gl_FUNC_MKNOD): Likewise.
* lib/mknod.c (mknod): Likewise.
* m4/sys_stat_h.m4 (gl_SYS_STAT_H_DEFAULTS): Set witness
defaults.
* modules/sys_stat (Makefile.am): Substitute them.
* lib/sys_stat.in.h (mknod): Declare replacement.
* MODULES.html.sh (Support for systems lacking POSIX:2008):
Document it.
* doc/posix-functions/mknod.texi (mknod): Likewise.
* modules/mknod-tests: New test.
* tests/test-mknod.c: Likewise.
Signed-off-by: Eric Blake <ebb9@byu.net>
30 lines
746 B
Plaintext
30 lines
746 B
Plaintext
@node mknod
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@section @code{mknod}
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@findex mknod
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POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/mknod.html}
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Gnulib module: mknod
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Portability problems fixed by Gnulib:
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@itemize
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@item
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This function requires super-user privileges to create a fifo:
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FreeBSD 7.2, OpenBSD 3.8.
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@item
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This function mishandles trailing slash on some platforms:
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FreeBSD 7.2, Solaris 9.
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@item
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This function is missing on some platforms; however, the replacement
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always fails with @code{ENOSYS}:
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mingw.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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Use of this function for anything except fifos is not portable,
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generally requiring super-user privileges and knowledge of supported
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device numbers.
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@end itemize
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