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Diffstat (limited to 'src/lib/libcmd/mkdir.c')
| -rw-r--r-- | src/lib/libcmd/mkdir.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/lib/libcmd/mkdir.c b/src/lib/libcmd/mkdir.c new file mode 100644 index 0000000..bdd6ecf --- /dev/null +++ b/src/lib/libcmd/mkdir.c @@ -0,0 +1,189 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1992-2012 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * David Korn + * AT&T Bell Laboratories + * + * mkdir + */ + +static const char usage[] = +"[-?\n@(#)$Id: mkdir (AT&T Research) 2010-04-08 $\n]" +USAGE_LICENSE +"[+NAME?mkdir - make directories]" +"[+DESCRIPTION?\bmkdir\b creates one or more directories. By " + "default, the mode of created directories is \ba=rwx\b minus the " + "bits set in the \bumask\b(1).]" +"[m:mode]:[mode?Set the mode of created directories to \amode\a. " + "\amode\a is symbolic or octal mode as in \bchmod\b(1). Relative " + "modes assume an initial mode of \ba=rwx\b.]" +"[p:parents?Create any missing intermediate pathname components. For " + "each dir operand that does not name an existing directory, effects " + "equivalent to those caused by the following command shall occur: " + "\vmkdir -p -m $(umask -S),u+wx $(dirname dir) && mkdir [-m mode]] " + "dir\v where the \b-m\b mode option represents that option supplied to " + "the original invocation of \bmkdir\b, if any. Each dir operand that " + "names an existing directory shall be ignored without error.]" +"[v:verbose?Print a message on the standard error for each created " + "directory.]" +"\n" +"\ndirectory ...\n" +"\n" +"[+EXIT STATUS?]{" + "[+0?All directories created successfully, or the \b-p\b option " + "was specified and all the specified directories now exist.]" + "[+>0?An error occurred.]" +"}" +"[+SEE ALSO?\bchmod\b(1), \brmdir\b(1), \bumask\b(1)]" +; + +#include <cmd.h> +#include <ls.h> + +#define DIRMODE (S_IRWXU|S_IRWXG|S_IRWXO) + +int +b_mkdir(int argc, char** argv, Shbltin_t* context) +{ + register char* path; + register int n; + register mode_t mode = DIRMODE; + register mode_t mask = 0; + register int mflag = 0; + register int pflag = 0; + register int vflag = 0; + int made; + char* part; + mode_t dmode; + struct stat st; + + cmdinit(argc, argv, context, ERROR_CATALOG, 0); + for (;;) + { + switch (optget(argv, usage)) + { + case 'm': + mflag = 1; + mode = strperm(opt_info.arg, &part, mode); + if (*part) + error(ERROR_exit(0), "%s: invalid mode", opt_info.arg); + continue; + case 'p': + pflag = 1; + continue; + case 'v': + vflag = 1; + continue; + case ':': + error(2, "%s", opt_info.arg); + break; + case '?': + error(ERROR_usage(2), "%s", opt_info.arg); + break; + } + break; + } + argv += opt_info.index; + if (error_info.errors || !*argv) + error(ERROR_usage(2), "%s", optusage(NiL)); + mask = umask(0); + if (mflag || pflag) + { + dmode = DIRMODE & ~mask; + if (!mflag) + mode = dmode; + dmode |= S_IWUSR | S_IXUSR; + } + else + { + mode &= ~mask; + umask(mask); + mask = 0; + } + while (path = *argv++) + { + if (!mkdir(path, mode)) + { + if (vflag) + error(0, "%s: directory created", path); + made = 1; + } + else if (!pflag || !(errno == ENOENT || errno == EEXIST || errno == ENOTDIR)) + { + error(ERROR_system(0), "%s:", path); + continue; + } + else if (errno == EEXIST) + continue; + else + { + /* + * -p option, preserve intermediates + * first eliminate trailing /'s + */ + + made = 0; + n = strlen(path); + while (n > 0 && path[--n] == '/'); + path[n + 1] = 0; + for (part = path, n = *part; n;) + { + /* skip over slashes */ + while (*part == '/') + part++; + /* skip to next component */ + while ((n = *part) && n != '/') + part++; + *part = 0; + if (mkdir(path, n ? dmode : mode) < 0 && errno != EEXIST && access(path, F_OK) < 0) + { + error(ERROR_system(0), "%s: cannot create intermediate directory", path); + *part = n; + break; + } + if (vflag) + error(0, "%s: directory created", path); + if (!(*part = n)) + { + made = 1; + break; + } + } + } + if (made && (mode & (S_ISVTX|S_ISUID|S_ISGID))) + { + if (stat(path, &st)) + { + error(ERROR_system(0), "%s: cannot stat", path); + break; + } + if ((st.st_mode & (S_ISVTX|S_ISUID|S_ISGID)) != (mode & (S_ISVTX|S_ISUID|S_ISGID)) && chmod(path, mode)) + { + error(ERROR_system(0), "%s: cannot change mode from %s to %s", path, fmtperm(st.st_mode & (S_ISVTX|S_ISUID|S_ISGID)), fmtperm(mode)); + break; + } + } + } + if (mask) + umask(mask); + return error_info.errors != 0; +} |