From 9d8085074991d5c0a42d6fc96a2d1a3ee918aad1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 08:17:24 +0200 Subject: Adding upstream version 5.1. Signed-off-by: Daniel Baumann --- examples/loadables/mkfifo.c | 146 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 examples/loadables/mkfifo.c (limited to 'examples/loadables/mkfifo.c') diff --git a/examples/loadables/mkfifo.c b/examples/loadables/mkfifo.c new file mode 100644 index 0000000..2bc4e98 --- /dev/null +++ b/examples/loadables/mkfifo.c @@ -0,0 +1,146 @@ +/* mkfifo - make FIFOs */ + +/* See Makefile for compilation details. */ + +/* + Copyright (C) 1999-2020 Free Software Foundation, Inc. + + This file is part of GNU Bash. + Bash is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + Bash is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Bash. If not, see . +*/ + +#include + +#include "bashtypes.h" +#include "posixstat.h" +#include +#include +#include "bashansi.h" +#if defined (HAVE_UNISTD_H) +# include +#endif + +#include "builtins.h" +#include "shell.h" +#include "bashgetopt.h" +#include "common.h" + +#if !defined (errno) +extern int errno; +#endif + +#define ISOCTAL(c) ((c) >= '0' && (c) <= '7') + +extern int parse_symbolic_mode (); + +static int original_umask; + +int +mkfifo_builtin (list) + WORD_LIST *list; +{ + int opt, mflag, omode, rval, nmode, basemode; + char *mode; + WORD_LIST *l; + + mflag = 0; + mode = (char *)NULL; + + reset_internal_getopt (); + while ((opt = internal_getopt(list, "m:")) != -1) + switch (opt) + { + case 'm': + mflag = 1; + mode = list_optarg; + break; + CASE_HELPOPT; + default: + builtin_usage(); + return (EX_USAGE); + } + list = loptend; + + if (list == 0) + { + builtin_usage (); + return (EX_USAGE); + } + + basemode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; + if (mode == NULL) + omode = basemode; + else if (ISOCTAL (*mode)) /* octal number */ + { + omode = read_octal (mode); + if (omode < 0) + { + builtin_error ("invalid file mode: %s", mode); + return (EXECUTION_FAILURE); + } + } + else /* symbolic mode */ + { + /* initial bits are a=rwx; the mode argument modifies them */ + omode = parse_symbolic_mode (mode, basemode); + if (omode < 0) + { + builtin_error ("invalid file mode: %s", mode); + return (EXECUTION_FAILURE); + } + } + + /* Make the new mode */ + original_umask = umask (0); + umask (original_umask); + + nmode = basemode & ~original_umask; + /* Adjust new mode based on mode argument */ + nmode &= omode; + + for (rval = EXECUTION_SUCCESS, l = list; l; l = l->next) + { + if (mkfifo (l->word->word, nmode) < 0) + { + builtin_error ("cannot create FIFO `%s': %s", l->word->word, strerror (errno)); + rval = EXECUTION_FAILURE; + } + } + return rval; +} + + +char *mkfifo_doc[] = { + "Create FIFOs (named pipes).", + "", + "Make FIFOs. Create the FIFOs named as arguments, in", + "the order specified, using mode a=rw as modified by the current", + "umask (see `help umask'). The -m option causes the file permission", + "bits of the final FIFO to be MODE. The MODE argument may be", + "an octal number or a symbolic mode like that used by chmod(1). If", + "a symbolic mode is used, the operations are interpreted relative to", + "an initial mode of \"a=rw\". mkfifo returns 0 if the FIFOs are", + "umask, plus write and search permissions for the owner. mkdir", + "created successfully, and non-zero if an error occurs.", + (char *)NULL +}; + +struct builtin mkfifo_struct = { + "mkfifo", + mkfifo_builtin, + BUILTIN_ENABLED, + mkfifo_doc, + "mkfifo [-m mode] fifo_name [fifo_name ...]", + 0 +}; -- cgit v1.2.3