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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* mode_string implementation for busybox
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*
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* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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*/
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/* Aug 13, 2003
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* Fix a bug reported by junkio@cox.net involving the mode_chars index.
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*/
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#include <common.h>
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#include <linux/stat.h>
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#if ( S_ISUID != 04000 ) || ( S_ISGID != 02000 ) || ( S_ISVTX != 01000 ) \
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|| ( S_IRUSR != 00400 ) || ( S_IWUSR != 00200 ) || ( S_IXUSR != 00100 ) \
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|| ( S_IRGRP != 00040 ) || ( S_IWGRP != 00020 ) || ( S_IXGRP != 00010 ) \
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|| ( S_IROTH != 00004 ) || ( S_IWOTH != 00002 ) || ( S_IXOTH != 00001 )
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#error permission bitflag value assumption(s) violated!
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#endif
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#if ( S_IFSOCK!= 0140000 ) || ( S_IFLNK != 0120000 ) \
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|| ( S_IFREG != 0100000 ) || ( S_IFBLK != 0060000 ) \
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|| ( S_IFDIR != 0040000 ) || ( S_IFCHR != 0020000 ) \
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|| ( S_IFIFO != 0010000 )
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#warning mode type bitflag value assumption(s) violated! falling back to larger version
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#if (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID | S_ISVTX) == 07777
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#undef mode_t
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#define mode_t unsigned short
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#endif
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static const mode_t mode_flags[] = {
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S_IRUSR, S_IWUSR, S_IXUSR, S_ISUID,
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S_IRGRP, S_IWGRP, S_IXGRP, S_ISGID,
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S_IROTH, S_IWOTH, S_IXOTH, S_ISVTX
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};
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/* The static const char arrays below are duplicated for the two cases
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* because moving them ahead of the mode_flags declaration cause a text
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* size increase with the gcc version I'm using. */
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/* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
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* and 'B' types don't appear to be available on linux. So I removed them. */
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static const char type_chars[16] = "?pc?d?b?-?l?s???";
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/* 0123456789abcdef */
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static const char mode_chars[7] = "rwxSTst";
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const char *bb_mode_string(int mode)
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{
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static char buf[12];
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char *p = buf;
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int i, j, k;
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*p = type_chars[ (mode >> 12) & 0xf ];
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i = 0;
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do {
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j = k = 0;
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do {
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*++p = '-';
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if (mode & mode_flags[i+j]) {
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*p = mode_chars[j];
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k = j;
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}
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} while (++j < 3);
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if (mode & mode_flags[i+j]) {
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*p = mode_chars[3 + (k & 2) + ((i&8) >> 3)];
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}
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i += 4;
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} while (i < 12);
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/* Note: We don't bother with nul termination because bss initialization
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* should have taken care of that for us. If the user scribbled in buf
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* memory, they deserve whatever happens. But we'll at least assert. */
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if (buf[10] != 0) return NULL;
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return buf;
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}
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#else
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/* The previous version used "0pcCd?bB-?l?s???". However, the '0', 'C',
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* and 'B' types don't appear to be available on linux. So I removed them. */
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static const char type_chars[16] = "?pc?d?b?-?l?s???";
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/* 0123456789abcdef */
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static const char mode_chars[7] = "rwxSTst";
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const char *bb_mode_string(int mode)
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{
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static char buf[12];
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char *p = buf;
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int i, j, k, m;
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*p = type_chars[ (mode >> 12) & 0xf ];
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i = 0;
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m = 0400;
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do {
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j = k = 0;
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do {
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*++p = '-';
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if (mode & m) {
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*p = mode_chars[j];
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k = j;
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}
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m >>= 1;
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} while (++j < 3);
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++i;
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if (mode & (010000 >> i)) {
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*p = mode_chars[3 + (k & 2) + (i == 3)];
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}
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} while (i < 3);
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/* Note: We don't bother with nul termination because bss initialization
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* should have taken care of that for us. If the user scribbled in buf
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* memory, they deserve whatever happens. But we'll at least assert. */
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if (buf[10] != 0) return NULL;
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return buf;
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}
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#endif
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