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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:33:23 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:33:23 +0000 |
commit | 1d5cace9db9aef76f26b2d7ba54bbb76443b00b2 (patch) | |
tree | 314a15dd1aa103da13bdc83ba1d2105a290bc5ba /examples/loadables/uname.c | |
parent | Initial commit. (diff) | |
download | bash-upstream.tar.xz bash-upstream.zip |
Adding upstream version 5.0.upstream/5.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'examples/loadables/uname.c')
-rw-r--r-- | examples/loadables/uname.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/examples/loadables/uname.c b/examples/loadables/uname.c new file mode 100644 index 0000000..106a1c8 --- /dev/null +++ b/examples/loadables/uname.c @@ -0,0 +1,162 @@ +/* + * uname - print system information + * + * usage: uname [-amnrsv] + * + */ + +/* + Copyright (C) 1999-2009 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 <http://www.gnu.org/licenses/>. +*/ + +#include <config.h> +#include <stdio.h> + +#include "bashtypes.h" + +#if defined (HAVE_UNAME) +# include <sys/utsname.h> +#else +struct utsname { + char sysname[32]; + char nodename[32]; + char release[32]; + char version[32]; + char machine[32]; +}; +#endif + +#include <errno.h> + +#include "builtins.h" +#include "shell.h" +#include "bashgetopt.h" +#include "common.h" + +#define FLAG_SYSNAME 0x01 /* -s */ +#define FLAG_NODENAME 0x02 /* -n */ +#define FLAG_RELEASE 0x04 /* -r */ +#define FLAG_VERSION 0x08 /* -v */ +#define FLAG_MACHINE 0x10 /* -m, -p */ + +#define FLAG_ALL 0x1f + +#ifndef errno +extern int errno; +#endif + +static void uprint(); + +static int uname_flags; + +int +uname_builtin (list) + WORD_LIST *list; +{ + int opt, r; + struct utsname uninfo; + + uname_flags = 0; + reset_internal_getopt (); + while ((opt = internal_getopt (list, "amnprsv")) != -1) + { + switch (opt) + { + case 'a': + uname_flags |= FLAG_ALL; + break; + case 'm': + case 'p': + uname_flags |= FLAG_MACHINE; + break; + case 'n': + uname_flags |= FLAG_NODENAME; + break; + case 'r': + uname_flags |= FLAG_RELEASE; + break; + case 's': + uname_flags |= FLAG_SYSNAME; + break; + case 'v': + uname_flags |= FLAG_VERSION; + break; + CASE_HELPOPT; + default: + builtin_usage (); + return (EX_USAGE); + } + } + list = loptend; + + if (list) + { + builtin_usage (); + return (EX_USAGE); + } + + if (uname_flags == 0) + uname_flags = FLAG_SYSNAME; + + /* Only ancient systems will not have uname(2). */ +#ifdef HAVE_UNAME + if (uname (&uninfo) < 0) + { + builtin_error ("cannot get system name: %s", strerror (errno)); + return (EXECUTION_FAILURE); + } +#else + builtin_error ("cannot get system information: uname(2) not available"); + return (EXECUTION_FAILURE); +#endif + + uprint (FLAG_SYSNAME, uninfo.sysname); + uprint (FLAG_NODENAME, uninfo.nodename); + uprint (FLAG_RELEASE, uninfo.release); + uprint (FLAG_VERSION, uninfo.version); + uprint (FLAG_MACHINE, uninfo.machine); + + return (EXECUTION_SUCCESS); +} + +static void +uprint (flag, info) + int flag; + char *info; +{ + if (uname_flags & flag) + { + uname_flags &= ~flag; + printf ("%s%c", info, uname_flags ? ' ' : '\n'); + } +} + +char *uname_doc[] = { + "Display system information.", + "", + "Display information about the system hardware and OS.", + (char *)NULL +}; + +struct builtin uname_struct = { + "uname", + uname_builtin, + BUILTIN_ENABLED, + uname_doc, + "uname [-amnrsv]", + 0 +}; |