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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [sys/] [linux/] [dl/] [dl-cache.h] - Blame information for rev 158

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/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
 
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
 
   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */
 
#include <stdint.h>
 
#ifndef _DL_CACHE_DEFAULT_ID
# define _DL_CACHE_DEFAULT_ID   3
#endif
 
#ifndef _dl_cache_check_flags
# define _dl_cache_check_flags(flags)                   \
  ((flags) == 1 || (flags) == _DL_CACHE_DEFAULT_ID)
#endif
 
#ifndef SYSCONFDIR
# define SYSCONFDIR "/etc"
#endif
 
#ifndef LD_SO_CACHE
# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache"
#endif
 
#define CACHEMAGIC "ld.so-1.7.0"
 
/* libc5 and glibc 2.0/2.1 use the same format.  For glibc 2.2 another
   format has been added in a compatible way:
   The beginning of the string table is used for the new table:
        old_magic
        nlibs
        libs[0]
        ...
        libs[nlibs-1]
        pad, new magic needs to be aligned
             - this is string[0] for the old format
        new magic - this is string[0] for the new format
        newnlibs
        ...
        newlibs[0]
        ...
        newlibs[newnlibs-1]
        string 1
        string 2
        ...
*/
struct file_entry
{
  int flags;            /* This is 1 for an ELF library.  */
  unsigned int key, value; /* String table indices.  */
};
 
struct cache_file
{
  char magic[sizeof CACHEMAGIC - 1];
  unsigned int nlibs;
  struct file_entry libs[0];
};
 
#define CACHEMAGIC_NEW "glibc-ld.so.cache"
#define CACHE_VERSION "1.1"
#define CACHEMAGIC_VERSION_NEW CACHEMAGIC_NEW CACHE_VERSION
 
 
struct file_entry_new
{
  int32_t flags;                /* This is 1 for an ELF library.  */
  uint32_t key, value;          /* String table indices.  */
  uint32_t osversion;           /* Required OS version.  */
  uint64_t hwcap;               /* Hwcap entry.  */
};
 
struct cache_file_new
{
  char magic[sizeof CACHEMAGIC_NEW - 1];
  char version[sizeof CACHE_VERSION - 1];
  uint32_t nlibs;               /* Number of entries.  */
  uint32_t len_strings;         /* Size of string table. */
  uint32_t unused[5];           /* Leave space for future extensions
                                   and align to 8 byte boundary.  */
  struct file_entry_new libs[0]; /* Entries describing libraries.  */
  /* After this the string table of size len_strings is found.  */
};
 
/* Used to align cache_file_new.  */
#define ALIGN_CACHE(addr)                               \
(((addr) + __alignof__ (struct cache_file_new) -1)      \
 & (~(__alignof__ (struct cache_file_new) - 1)))
 
static int
_dl_cache_libcmp (const char *p1, const char *p2)
{
  while (*p1 != '\0')
    {
      if (*p1 >= '0' && *p1 <= '9')
        {
          if (*p2 >= '0' && *p2 <= '9')
            {
              /* Must compare this numerically.  */
              int val1;
              int val2;
 
              val1 = *p1++ - '0';
              val2 = *p2++ - '0';
              while (*p1 >= '0' && *p1 <= '9')
                val1 = val1 * 10 + *p1++ - '0';
              while (*p2 >= '0' && *p2 <= '9')
                val2 = val2 * 10 + *p2++ - '0';
              if (val1 != val2)
                return val1 - val2;
            }
          else
            return 1;
        }
      else if (*p2 >= '0' && *p2 <= '9')
        return -1;
      else if (*p1 != *p2)
        return *p1 - *p2;
      else
        {
          ++p1;
          ++p2;
        }
    }
  return *p1 - *p2;
}

Line No.	Rev	Author	Line
1	148	jeremybenn	`/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.`
2			`Copyright (C) 1999, 2000 Free Software Foundation, Inc.`
3			`This file is part of the GNU C Library.`
4
5			`The GNU C Library is free software; you can redistribute it and/or`
6			`modify it under the terms of the GNU Lesser General Public`
7			`License as published by the Free Software Foundation; either`
8			`version 2.1 of the License, or (at your option) any later version.`
9
10			`The GNU C Library is distributed in the hope that it will be useful,`
11			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
12			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
13			`Lesser General Public License for more details.`
14
15			`You should have received a copy of the GNU Lesser General Public`
16			`License along with the GNU C Library; if not, write to the Free`
17			`Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA`
18			`02111-1307 USA. */`
19
20			`#include <stdint.h>`
21
22			`#ifndef _DL_CACHE_DEFAULT_ID`
23			`# define _DL_CACHE_DEFAULT_ID 3`
24			`#endif`
25
26			`#ifndef _dl_cache_check_flags`
27			`# define _dl_cache_check_flags(flags) \`
28			`((flags) == 1 \|\| (flags) == _DL_CACHE_DEFAULT_ID)`
29			`#endif`
30
31			`#ifndef SYSCONFDIR`
32			`# define SYSCONFDIR "/etc"`
33			`#endif`
34
35			`#ifndef LD_SO_CACHE`
36			`# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache"`
37			`#endif`
38
39			`#define CACHEMAGIC "ld.so-1.7.0"`
40
41			`/* libc5 and glibc 2.0/2.1 use the same format. For glibc 2.2 another`
42			`format has been added in a compatible way:`
43			`The beginning of the string table is used for the new table:`
44			`old_magic`
45			`nlibs`
46			`libs[0]`
47			`...`
48			`libs[nlibs-1]`
49			`pad, new magic needs to be aligned`
50			`- this is string[0] for the old format`
51			`new magic - this is string[0] for the new format`
52			`newnlibs`
53			`...`
54			`newlibs[0]`
55			`...`
56			`newlibs[newnlibs-1]`
57			`string 1`
58			`string 2`
59			`...`
60			`*/`
61			`struct file_entry`
62			`{`
63			`int flags; /* This is 1 for an ELF library. */`
64			`unsigned int key, value; /* String table indices. */`
65			`};`
66
67			`struct cache_file`
68			`{`
69			`char magic[sizeof CACHEMAGIC - 1];`
70			`unsigned int nlibs;`
71			`struct file_entry libs[0];`
72			`};`
73
74			`#define CACHEMAGIC_NEW "glibc-ld.so.cache"`
75			`#define CACHE_VERSION "1.1"`
76			`#define CACHEMAGIC_VERSION_NEW CACHEMAGIC_NEW CACHE_VERSION`
77
78
79			`struct file_entry_new`
80			`{`
81			`int32_t flags; /* This is 1 for an ELF library. */`
82			`uint32_t key, value; /* String table indices. */`
83			`uint32_t osversion; /* Required OS version. */`
84			`uint64_t hwcap; /* Hwcap entry. */`
85			`};`
86
87			`struct cache_file_new`
88			`{`
89			`char magic[sizeof CACHEMAGIC_NEW - 1];`
90			`char version[sizeof CACHE_VERSION - 1];`
91			`uint32_t nlibs; /* Number of entries. */`
92			`uint32_t len_strings; /* Size of string table. */`
93			`uint32_t unused[5]; /* Leave space for future extensions`
94			`and align to 8 byte boundary. */`
95			`struct file_entry_new libs[0]; /* Entries describing libraries. */`
96			`/* After this the string table of size len_strings is found. */`
97			`};`
98
99			`/* Used to align cache_file_new. */`
100			`#define ALIGN_CACHE(addr) \`
101			`(((addr) + __alignof__ (struct cache_file_new) -1) \`
102			`& (~(__alignof__ (struct cache_file_new) - 1)))`
103
104			`static int`
105			`_dl_cache_libcmp (const char p1, const char p2)`
106			`{`
107			`while (*p1 != '\0')`
108			`{`
109			`if (p1 >= '0' && p1 <= '9')`
110			`{`
111			`if (p2 >= '0' && p2 <= '9')`
112			`{`
113			`/* Must compare this numerically. */`
114			`int val1;`
115			`int val2;`
116
117			`val1 = *p1++ - '0';`
118			`val2 = *p2++ - '0';`
119			`while (p1 >= '0' && p1 <= '9')`
120			`val1 = val1 * 10 + *p1++ - '0';`
121			`while (p2 >= '0' && p2 <= '9')`
122			`val2 = val2 * 10 + *p2++ - '0';`
123			`if (val1 != val2)`
124			`return val1 - val2;`
125			`}`
126			`else`
127			`return 1;`
128			`}`
129			`else if (p2 >= '0' && p2 <= '9')`
130			`return -1;`
131			`else if (p1 != p2)`
132			`return p1 - p2;`
133			`else`
134			`{`
135			`++p1;`
136			`++p2;`
137			`}`
138			`}`
139			`return p1 - p2;`
140			`}`

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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [sys/] [linux/] [dl/] [dl-cache.h] - Blame information for rev 158