[people/ms/u-boot.git] / fs / reiserfs / mode_string.c

/*
 * mode_string implementation for busybox
 *
 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/* Aug 13, 2003
 * Fix a bug reported by junkio@cox.net involving the mode_chars index.
 */


#include <common.h>
#include <linux/stat.h>

#if ( S_ISUID != 04000 ) || ( S_ISGID != 02000 ) || ( S_ISVTX != 01000 ) \
 || ( S_IRUSR != 00400 ) || ( S_IWUSR != 00200 ) || ( S_IXUSR != 00100 ) \
 || ( S_IRGRP != 00040 ) || ( S_IWGRP != 00020 ) || ( S_IXGRP != 00010 ) \
 || ( S_IROTH != 00004 ) || ( S_IWOTH != 00002 ) || ( S_IXOTH != 00001 )
#error permission bitflag value assumption(s) violated!
#endif

#if ( S_IFSOCK!= 0140000 ) || ( S_IFLNK != 0120000 ) \
 || ( S_IFREG != 0100000 ) || ( S_IFBLK != 0060000 ) \
 || ( S_IFDIR != 0040000 ) || ( S_IFCHR != 0020000 ) \
 || ( S_IFIFO != 0010000 )
#warning mode type bitflag value assumption(s) violated! falling back to larger version

#if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777
#undef mode_t
#define mode_t unsigned short
#endif

static const mode_t mode_flags[] = {
	S_IRUSR, S_IWUSR, S_IXUSR, S_ISUID,
	S_IRGRP, S_IWGRP, S_IXGRP, S_ISGID,
	S_IROTH, S_IWOTH, S_IXOTH, S_ISVTX
};

/* The static const char arrays below are duplicated for the two cases
 * because moving them ahead of the mode_flags declaration cause a text
 * size increase with the gcc version I'm using. */

/* The previous version used "0pcCd?bB-?l?s???".  However, the '0', 'C',
 * and 'B' types don't appear to be available on linux.  So I removed them. */
static const char type_chars[16] = "?pc?d?b?-?l?s???";
/*                                  0123456789abcdef */
static const char mode_chars[7] = "rwxSTst";

const char *bb_mode_string(int mode)
{
	static char buf[12];
	char *p = buf;

	int i, j, k;

	*p = type_chars[ (mode >> 12) & 0xf ];
	i = 0;
	do {
		j = k = 0;
		do {
			*++p = '-';
			if (mode & mode_flags[i+j]) {
				*p = mode_chars[j];
				k = j;
			}
		} while (++j < 3);
		if (mode & mode_flags[i+j]) {
			*p = mode_chars[3 + (k & 2) + ((i&8) >> 3)];
		}
		i += 4;
	} while (i < 12);

	/* Note: We don't bother with nul termination because bss initialization
	 * should have taken care of that for us.  If the user scribbled in buf
	 * memory, they deserve whatever happens.  But we'll at least assert. */
	if (buf[10] != 0) return NULL;

	return buf;
}

#else

/* The previous version used "0pcCd?bB-?l?s???".  However, the '0', 'C',
 * and 'B' types don't appear to be available on linux.  So I removed them. */
static const char type_chars[16] = "?pc?d?b?-?l?s???";
/*                                  0123456789abcdef */
static const char mode_chars[7] = "rwxSTst";

const char *bb_mode_string(int mode)
{
	static char buf[12];
	char *p = buf;

	int i, j, k, m;

	*p = type_chars[ (mode >> 12) & 0xf ];
	i = 0;
	m = 0400;
	do {
		j = k = 0;
		do {
			*++p = '-';
			if (mode & m) {
				*p = mode_chars[j];
				k = j;
			}
			m >>= 1;
		} while (++j < 3);
		++i;
		if (mode & (010000 >> i)) {
			*p = mode_chars[3 + (k & 2) + (i == 3)];
		}
	} while (i < 3);

	/* Note: We don't bother with nul termination because bss initialization
	 * should have taken care of that for us.  If the user scribbled in buf
	 * memory, they deserve whatever happens.  But we'll at least assert. */
	if (buf[10] != 0) return NULL;

	return buf;
}

#endif
Commit	Line	Data
518e2e1a WD	1	/*
	2	* mode_string implementation for busybox
	3	*
	4	* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
	5	*
1a459660	6	* SPDX-License-Identifier: GPL-2.0+
518e2e1a WD	7	*/
	8
	9	/* Aug 13, 2003
	10	* Fix a bug reported by junkio@cox.net involving the mode_chars index.
	11	*/
	12
	13
	14	#include <common.h>
518e2e1a WD	15	#include <linux/stat.h>
	16
	17	#if ( S_ISUID != 04000 ) \|\| ( S_ISGID != 02000 ) \|\| ( S_ISVTX != 01000 ) \
	18	\|\| ( S_IRUSR != 00400 ) \|\| ( S_IWUSR != 00200 ) \|\| ( S_IXUSR != 00100 ) \
	19	\|\| ( S_IRGRP != 00040 ) \|\| ( S_IWGRP != 00020 ) \|\| ( S_IXGRP != 00010 ) \
	20	\|\| ( S_IROTH != 00004 ) \|\| ( S_IWOTH != 00002 ) \|\| ( S_IXOTH != 00001 )
	21	#error permission bitflag value assumption(s) violated!
	22	#endif
	23
	24	#if ( S_IFSOCK!= 0140000 ) \|\| ( S_IFLNK != 0120000 ) \
	25	\|\| ( S_IFREG != 0100000 ) \|\| ( S_IFBLK != 0060000 ) \
	26	\|\| ( S_IFDIR != 0040000 ) \|\| ( S_IFCHR != 0020000 ) \
	27	\|\| ( S_IFIFO != 0010000 )
	28	#warning mode type bitflag value assumption(s) violated! falling back to larger version
	29
	30	#if (S_IRWXU \| S_IRWXG \| S_IRWXO \| S_ISUID \| S_ISGID \| S_ISVTX) == 07777
	31	#undef mode_t
	32	#define mode_t unsigned short
	33	#endif
	34
	35	static const mode_t mode_flags[] = {
	36	S_IRUSR, S_IWUSR, S_IXUSR, S_ISUID,
	37	S_IRGRP, S_IWGRP, S_IXGRP, S_ISGID,
	38	S_IROTH, S_IWOTH, S_IXOTH, S_ISVTX
	39	};
	40
	41	/* The static const char arrays below are duplicated for the two cases
	42	* because moving them ahead of the mode_flags declaration cause a text
	43	* size increase with the gcc version I'm using. */
	44
	45	/* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
	46	* and 'B' types don't appear to be available on linux. So I removed them. */
	47	static const char type_chars[16] = "?pc?d?b?-?l?s???";
	48	/* 0123456789abcdef */
	49	static const char mode_chars[7] = "rwxSTst";
	50
	51	const char *bb_mode_string(int mode)
	52	{
	53	static char buf[12];
	54	char *p = buf;
	55
	56	int i, j, k;
	57
	58	*p = type_chars[ (mode >> 12) & 0xf ];
	59	i = 0;
	60	do {
	61	j = k = 0;
	62	do {
	63	*++p = '-';
	64	if (mode & mode_flags[i+j]) {
	65	*p = mode_chars[j];
	66	k = j;
	67	}
	68	} while (++j < 3);
	69	if (mode & mode_flags[i+j]) {
	70	*p = mode_chars[3 + (k & 2) + ((i&8) >> 3)];
	71	}
	72	i += 4;
	73	} while (i < 12);
	74
	75	/* Note: We don't bother with nul termination because bss initialization
	76	* should have taken care of that for us. If the user scribbled in buf
	77	* memory, they deserve whatever happens. But we'll at least assert. */
	78	if (buf[10] != 0) return NULL;
79
80	return buf;
81	}
82
83	#else
84
85	/* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
86	* and 'B' types don't appear to be available on linux. So I removed them. */
518e2e1a WD	87	static const char type_chars[16] = "?pc?d?b?-?l?s???";
	88	/* 0123456789abcdef */
	89	static const char mode_chars[7] = "rwxSTst";
	90
	91	const char *bb_mode_string(int mode)
	92	{
	93	static char buf[12];
	94	char *p = buf;
	95
	96	int i, j, k, m;
	97
	98	*p = type_chars[ (mode >> 12) & 0xf ];
	99	i = 0;
	100	m = 0400;
	101	do {
	102	j = k = 0;
	103	do {
	104	*++p = '-';
	105	if (mode & m) {
	106	*p = mode_chars[j];
	107	k = j;
	108	}
	109	m >>= 1;
	110	} while (++j < 3);
	111	++i;
	112	if (mode & (010000 >> i)) {
	113	*p = mode_chars[3 + (k & 2) + (i == 3)];
	114	}
	115	} while (i < 3);
	116
	117	/* Note: We don't bother with nul termination because bss initialization
	118	* should have taken care of that for us. If the user scribbled in buf
	119	* memory, they deserve whatever happens. But we'll at least assert. */
	120	if (buf[10] != 0) return NULL;
	121
	122	return buf;
	123	}
	124
	125	#endif