diff options
Diffstat (limited to 'bin/mkdir/mkdir.c')
| -rw-r--r-- | bin/mkdir/mkdir.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/bin/mkdir/mkdir.c b/bin/mkdir/mkdir.c new file mode 100644 index 0000000..ea19209 --- /dev/null +++ b/bin/mkdir/mkdir.c @@ -0,0 +1,218 @@ +/*- + * Copyright (c) 1983, 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#ifndef lint +static char const copyright[] = +"@(#) Copyright (c) 1983, 1992, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)mkdir.c 8.2 (Berkeley) 1/25/94"; +#endif /* not lint */ +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/stat.h> + +#include <err.h> +#include <errno.h> +#include <libgen.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <unistd.h> + +static int build(char *, mode_t); +static void usage(void); + +static int vflag; + +int +main(int argc, char *argv[]) +{ + int ch, exitval, success, pflag; + mode_t omode; + void *set = NULL; + char *mode; + + omode = pflag = 0; + mode = NULL; + while ((ch = getopt(argc, argv, "m:pv")) != -1) + switch(ch) { + case 'm': + mode = optarg; + break; + case 'p': + pflag = 1; + break; + case 'v': + vflag = 1; + break; + case '?': + default: + usage(); + } + + argc -= optind; + argv += optind; + if (argv[0] == NULL) + usage(); + + if (mode == NULL) { + omode = S_IRWXU | S_IRWXG | S_IRWXO; + } else { + if ((set = setmode(mode)) == NULL) + errx(1, "invalid file mode: %s", mode); + omode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); + free(set); + } + + for (exitval = 0; *argv != NULL; ++argv) { + if (pflag) { + success = build(*argv, omode); + } else if (mkdir(*argv, omode) < 0) { + if (errno == ENOTDIR || errno == ENOENT) + warn("%s", dirname(*argv)); + else + warn("%s", *argv); + success = 0; + } else { + success = 1; + if (vflag) + (void)printf("%s\n", *argv); + } + if (!success) + exitval = 1; + /* + * The mkdir() and umask() calls both honor only the low + * nine bits, so if you try to set a mode including the + * sticky, setuid, setgid bits you lose them. Don't do + * this unless the user has specifically requested a mode, + * as chmod will (obviously) ignore the umask. Do this + * on newly created directories only. + */ + if (success == 1 && mode != NULL && chmod(*argv, omode) == -1) { + warn("%s", *argv); + exitval = 1; + } + } + exit(exitval); +} + + +/* + * Returns 1 if a directory has been created, + * 2 if it already existed, and 0 on failure. + */ +static int +build(char *path, mode_t omode) +{ + struct stat sb; + mode_t numask, oumask; + int first, last, retval; + char *p; + + p = path; + oumask = 0; + retval = 1; + if (p[0] == '/') /* Skip leading '/'. */ + ++p; + for (first = 1, last = 0; !last ; ++p) { + if (p[0] == '\0') + last = 1; + else if (p[0] != '/') + continue; + *p = '\0'; + if (!last && p[1] == '\0') + last = 1; + if (first) { + /* + * POSIX 1003.2: + * For each dir operand that does not name an existing + * directory, effects equivalent to those caused by the + * following command shall occcur: + * + * mkdir -p -m $(umask -S),u+wx $(dirname dir) && + * mkdir [-m mode] dir + * + * We change the user's umask and then restore it, + * instead of doing chmod's. + */ + oumask = umask(0); + numask = oumask & ~(S_IWUSR | S_IXUSR); + (void)umask(numask); + first = 0; + } + if (last) + (void)umask(oumask); + if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0) { + if (errno == EEXIST || errno == EISDIR) { + if (stat(path, &sb) < 0) { + warn("%s", path); + retval = 0; + break; + } else if (!S_ISDIR(sb.st_mode)) { + if (last) + errno = EEXIST; + else + errno = ENOTDIR; + warn("%s", path); + retval = 0; + break; + } + if (last) + retval = 2; + } else { + warn("%s", path); + retval = 0; + break; + } + } else if (vflag) + printf("%s\n", path); + if (!last) + *p = '/'; + } + if (!first && !last) + (void)umask(oumask); + return (retval); +} + +static void +usage(void) +{ + + (void)fprintf(stderr, + "usage: mkdir [-pv] [-m mode] directory_name ...\n"); + exit (EX_USAGE); +} |
