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Diffstat (limited to 'lib/libc/gen/strtofflags.c')
| -rw-r--r-- | lib/libc/gen/strtofflags.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/lib/libc/gen/strtofflags.c b/lib/libc/gen/strtofflags.c new file mode 100644 index 0000000..af0420d --- /dev/null +++ b/lib/libc/gen/strtofflags.c @@ -0,0 +1,157 @@ +/*- + * Copyright (c) 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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 defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +#ifdef __FBSDID +__FBSDID("$FreeBSD$"); +#endif + +#include <sys/types.h> +#include <sys/stat.h> + +#include <stddef.h> +#include <stdlib.h> +#include <string.h> + +static struct { + char *name; + u_long flag; + int invert; +} mapping[] = { + /* shorter names per flag first, all prefixed by "no" */ + { "nosappnd", SF_APPEND, 0 }, + { "nosappend", SF_APPEND, 0 }, + { "noarch", SF_ARCHIVED, 0 }, + { "noarchived", SF_ARCHIVED, 0 }, + { "noschg", SF_IMMUTABLE, 0 }, + { "noschange", SF_IMMUTABLE, 0 }, + { "nosimmutable", SF_IMMUTABLE, 0 }, + { "nosunlnk", SF_NOUNLINK, 0 }, + { "nosunlink", SF_NOUNLINK, 0 }, + { "nouappnd", UF_APPEND, 0 }, + { "nouappend", UF_APPEND, 0 }, + { "nouchg", UF_IMMUTABLE, 0 }, + { "nouchange", UF_IMMUTABLE, 0 }, + { "nouimmutable", UF_IMMUTABLE, 0 }, + { "nodump", UF_NODUMP, 1 }, + { "noopaque", UF_OPAQUE, 0 }, + { "nouunlnk", UF_NOUNLINK, 0 }, + { "nouunlink", UF_NOUNLINK, 0 } +}; +#define longestflaglen 12 +#define nmappings (sizeof(mapping) / sizeof(mapping[0])) + +/* + * fflagstostr -- + * Convert file flags to a comma-separated string. If no flags + * are set, return the empty string. + */ +char * +fflagstostr(flags) + u_long flags; +{ + char *string; + char *sp, *dp; + u_long setflags; + int i; + + if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) + return (NULL); + + setflags = flags; + dp = string; + for (i = 0; i < nmappings; i++) { + if (setflags & mapping[i].flag) { + if (dp > string) + *dp++ = ','; + for (sp = mapping[i].invert ? mapping[i].name : + mapping[i].name + 2; *sp; *dp++ = *sp++) ; + setflags &= ~mapping[i].flag; + } + } + *dp = '\0'; + return (string); +} + +/* + * strtofflags -- + * Take string of arguments and return file flags. Return 0 on + * success, 1 on failure. On failure, stringp is set to point + * to the offending token. + */ +int +strtofflags(stringp, setp, clrp) + char **stringp; + u_long *setp, *clrp; +{ + char *string, *p; + int i; + + if (setp) + *setp = 0; + if (clrp) + *clrp = 0; + string = *stringp; + while ((p = strsep(&string, "\t ,")) != NULL) { + *stringp = p; + if (*p == '\0') + continue; + for (i = 0; i < nmappings; i++) { + if (strcmp(p, mapping[i].name + 2) == 0) { + if (mapping[i].invert) { + if (clrp) + *clrp |= mapping[i].flag; + } else { + if (setp) + *setp |= mapping[i].flag; + } + break; + } else if (strcmp(p, mapping[i].name) == 0) { + if (mapping[i].invert) { + if (setp) + *setp |= mapping[i].flag; + } else { + if (clrp) + *clrp |= mapping[i].flag; + } + break; + } + } + if (i == nmappings) + return 1; + } + return 0; +} |
