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    revision 815 by niro, Sat Sep 1 22:45:15 2007 UTC revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
    # Line 1  Line 1 
    1  /* vi: set sw=4 ts=4: */  /* vi: set sw=4 ts=4: */
    2  /*  /*
    3     Copyright 2006, Bernhard Fischer     Copyright 2006, Bernhard Reutner-Fischer
    4    
    5     Licensed under the GPL v2 or later, see the file LICENSE in this tarball.     Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
    6  */  */
    # Line 17  Line 17 
    17  #endif  #endif
    18    
    19  /* __restrict is known in EGCS 1.2 and above. */  /* __restrict is known in EGCS 1.2 and above. */
    20  #if !__GNUC_PREREQ (2,92)  #if !__GNUC_PREREQ(2,92)
    21  # ifndef __restrict  # ifndef __restrict
    22  #  define __restrict     /* Ignore */  #  define __restrict     /* Ignore */
    23  # endif  # endif
    # Line 27  Line 27 
    27     macros freely, and know that they will come into play for the     macros freely, and know that they will come into play for the
    28     version of gcc in which they are supported.  */     version of gcc in which they are supported.  */
    29    
    30  #if !__GNUC_PREREQ (2,7)  #if !__GNUC_PREREQ(2,7)
    31  # ifndef __attribute__  # ifndef __attribute__
    32  #  define __attribute__(x)  #  define __attribute__(x)
    33  # endif  # endif
    # Line 37  Line 37 
    37  #if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L  #if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
    38  /* it's a keyword */  /* it's a keyword */
    39  #else  #else
    40  # if __GNUC_PREREQ (2,7)  # if __GNUC_PREREQ(2,7)
    41  #  define inline __inline__  #  define inline __inline__
    42  # else  # else
    43  #  define inline  #  define inline
    # Line 48  Line 48 
    48  # define __const const  # define __const const
    49  #endif  #endif
    50    
    51  # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))  #define UNUSED_PARAM __attribute__ ((__unused__))
    52  # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))  #define NORETURN __attribute__ ((__noreturn__))
    53  # define ATTRIBUTE_PACKED __attribute__ ((__packed__))  #define PACKED __attribute__ ((__packed__))
    54  # define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))  #define ALIGNED(m) __attribute__ ((__aligned__(m)))
    55  # if __GNUC_PREREQ (3,0)  /* __NO_INLINE__: some gcc's do not honor inlining! :( */
    56  #  define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) inline  #if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
    57    # define ALWAYS_INLINE __attribute__ ((always_inline)) inline
    58    /* I've seen a toolchain where I needed __noinline__ instead of noinline */
    59    # define NOINLINE      __attribute__((__noinline__))
    60    # if !ENABLE_WERROR
    61    #  define DEPRECATED __attribute__ ((__deprecated__))
    62    #  define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
    63  # else  # else
    64  #  define ATTRIBUTE_ALWAYS_INLINE inline  #  define DEPRECATED /* n/a */
    65    #  define UNUSED_PARAM_RESULT /* n/a */
    66  # endif  # endif
    67    #else
    68    # define ALWAYS_INLINE inline /* n/a */
    69    # define NOINLINE /* n/a */
    70    # define DEPRECATED /* n/a */
    71    # define UNUSED_PARAM_RESULT /* n/a */
    72    #endif
    73    
    74  /* -fwhole-program makes all symbols local. The attribute externally_visible  /* -fwhole-program makes all symbols local. The attribute externally_visible
    75     forces a symbol global.  */     forces a symbol global.  */
    76  # if __GNUC_PREREQ (4,1)  #if __GNUC_PREREQ(4,1)
    77  #  define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__))  # define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
    78  # else  //__attribute__ ((__externally_visible__))
    79  #  define ATTRIBUTE_EXTERNALLY_VISIBLE  #else
    80  # endif /* GNUC >= 4.1 */  # define EXTERNALLY_VISIBLE
    81    #endif /* GNUC >= 4.1 */
    82    
    83  /* We use __extension__ in some places to suppress -pedantic warnings  /* We use __extension__ in some places to suppress -pedantic warnings
    84     about GCC extensions.  This feature didn't work properly before     about GCC extensions.  This feature didn't work properly before
    85     gcc 2.8.  */     gcc 2.8.  */
    86  #if !__GNUC_PREREQ (2,8)  #if !__GNUC_PREREQ(2,8)
    87  # ifndef __extension__  # ifndef __extension__
    88  #  define __extension__  #  define __extension__
    89  # endif  # endif
    90  #endif  #endif
    91    
    92  /* gcc-2.95 had no va_copy but only __va_copy. */  /* gcc-2.95 had no va_copy but only __va_copy. */
    93  #if !__GNUC_PREREQ (3,0)  #if !__GNUC_PREREQ(3,0)
    94  # include <stdarg.h>  # include <stdarg.h>
    95  # if !defined va_copy && defined __va_copy  # if !defined va_copy && defined __va_copy
    96  #  define va_copy(d,s) __va_copy((d),(s))  #  define va_copy(d,s) __va_copy((d),(s))
    97  # endif  # endif
    98  #endif  #endif
    99    
    100    /* FAST_FUNC is a qualifier which (possibly) makes function call faster
    101     * and/or smaller by using modified ABI. It is usually only needed
    102     * on non-static, busybox internal functions. Recent versions of gcc
    103     * optimize statics automatically. FAST_FUNC on static is required
    104     * only if you need to match a function pointer's type */
    105    #if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
    106    /* stdcall makes callee to pop arguments from stack, not caller */
    107    # define FAST_FUNC __attribute__((regparm(3),stdcall))
    108    /* #elif ... - add your favorite arch today! */
    109    #else
    110    # define FAST_FUNC
    111    #endif
    112    
    113  /* ---- Endian Detection ------------------------------------ */  /* ---- Endian Detection ------------------------------------ */
    114    
    115  #if (defined __digital__ && defined __unix__)  #if (defined __digital__ && defined __unix__)
    # Line 105  Line 132 
    132  # define BB_LITTLE_ENDIAN 1  # define BB_LITTLE_ENDIAN 1
    133  #endif  #endif
    134    
    135    /* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
    136  #if BB_BIG_ENDIAN  #if BB_BIG_ENDIAN
    137  #define SWAP_BE16(x) (x)  #define SWAP_BE16(x) (x)
    138  #define SWAP_BE32(x) (x)  #define SWAP_BE32(x) (x)
    # Line 121  Line 149 
    149  #define SWAP_LE64(x) (x)  #define SWAP_LE64(x) (x)
    150  #endif  #endif
    151    
    152    /* ---- Unaligned access ------------------------------------ */
    153    
    154    /* parameter is supposed to be an uint32_t* ptr */
    155    #if defined(i386) || defined(__x86_64__)
    156    #define get_unaligned_u32p(u32p) (*(u32p))
    157    /* #elif ... - add your favorite arch today! */
    158    #else
    159    /* performs reasonably well (gcc usually inlines memcpy here) */
    160    #define get_unaligned_u32p(u32p) ({ uint32_t __t; memcpy(&__t, (u32p), 4); __t; })
    161    #endif
    162    
    163  /* ---- Networking ------------------------------------------ */  /* ---- Networking ------------------------------------------ */
    164    
    165  #ifndef __APPLE__  #ifndef __APPLE__
    166  # include <arpa/inet.h>  # include <arpa/inet.h>
    167    # ifndef __socklen_t_defined
    168    typedef int socklen_t;
    169    # endif
    170  #else  #else
    171  # include <netinet/in.h>  # include <netinet/in.h>
    172  #endif  #endif
    173    
     #ifndef __socklen_t_defined  
     typedef int socklen_t;  
     #endif  
       
    174  /* ---- Compiler dependent settings ------------------------- */  /* ---- Compiler dependent settings ------------------------- */
    175  #if (defined __digital__ && defined __unix__)  
    176    #if (defined __digital__ && defined __unix__) || defined __APPLE__
    177  # undef HAVE_MNTENT_H  # undef HAVE_MNTENT_H
    178    # undef HAVE_SYS_STATFS_H
    179  #else  #else
    180  # define HAVE_MNTENT_H 1  # define HAVE_MNTENT_H 1
    181    # define HAVE_SYS_STATFS_H 1
    182  #endif /* ___digital__ && __unix__ */  #endif /* ___digital__ && __unix__ */
    183    
    184    /* linux/loop.h relies on __u64. Make sure we have that as a proper type
    185     * until userspace is widely fixed.  */
    186    #if (defined __INTEL_COMPILER && !defined __GNUC__) || \
    187     (defined __GNUC__ && defined __STRICT_ANSI__)
    188    __extension__ typedef __signed__ long long __s64;
    189    __extension__ typedef unsigned long long __u64;
    190    #endif
    191    
    192  /*----- Kernel versioning ------------------------------------*/  /*----- Kernel versioning ------------------------------------*/
    193    
    194  #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))  #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
    195    
    196  /* ---- miscellaneous --------------------------------------- */  /* ---- Miscellaneous --------------------------------------- */
    197    
    198  #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \  #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
    199   !defined(__dietlibc__) && \   !defined(__dietlibc__) && \
    # Line 151  typedef int socklen_t; Line 202  typedef int socklen_t;
    202  # error "Sorry, this libc version is not supported :("  # error "Sorry, this libc version is not supported :("
    203  #endif  #endif
    204    
    205  // Don't perpetuate e2fsck crap into the headers.  Clean up e2fsck instead.  /* Don't perpetuate e2fsck crap into the headers.  Clean up e2fsck instead. */
    206    
    207  #if defined __GLIBC__ || defined __UCLIBC__ \  #if defined __GLIBC__ || defined __UCLIBC__ \
    208   || defined __dietlibc__ || defined _NEWLIB_VERSION   || defined __dietlibc__ || defined _NEWLIB_VERSION
    # Line 159  typedef int socklen_t; Line 210  typedef int socklen_t;
    210  #define HAVE_FEATURES_H  #define HAVE_FEATURES_H
    211  #include <stdint.h>  #include <stdint.h>
    212  #define HAVE_STDINT_H  #define HAVE_STDINT_H
    213  #else  #elif !defined __APPLE__
    214  /* Largest integral types.  */  /* Largest integral types.  */
    215  #if __BIG_ENDIAN__  #if __BIG_ENDIAN__
    216  typedef long int                intmax_t;  typedef long                intmax_t;
    217  typedef unsigned long int       uintmax_t;  typedef unsigned long       uintmax_t;
    218  #else  #else
    219  __extension__  __extension__
    220  typedef long long int           intmax_t;  typedef long long           intmax_t;
    221  __extension__  __extension__
    222  typedef unsigned long long int  uintmax_t;  typedef unsigned long long  uintmax_t;
    223  #endif  #endif
    224  #endif  #endif
    225    
    # Line 183  typedef int smallint; Line 234  typedef int smallint;
    234  typedef unsigned smalluint;  typedef unsigned smalluint;
    235  #endif  #endif
    236    
    237    /* ISO C Standard:  7.16  Boolean type and values  <stdbool.h> */
    238    #if (defined __digital__ && defined __unix__)
    239    /* old system without (proper) C99 support */
    240    #define bool smalluint
    241    #else
    242    /* modern system, so use it */
    243    #include <stdbool.h>
    244    #endif
    245    
    246    /* Try to defeat gcc's alignment of "char message[]"-like data */
    247    #if 1 /* if needed: !defined(arch1) && !defined(arch2) */
    248    #define ALIGN1 __attribute__((aligned(1)))
    249    #define ALIGN2 __attribute__((aligned(2)))
    250    #else
    251    /* Arches which MUST have 2 or 4 byte alignment for everything are here */
    252    #define ALIGN1
    253    #define ALIGN2
    254    #endif
    255    
    256    
    257  /* uclibc does not implement daemon() for no-mmu systems.  /* uclibc does not implement daemon() for no-mmu systems.
    258   * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.   * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
    259   * For earlier versions there is no reliable way to check if we are building   * For earlier versions there is no reliable way to check if we are building
    260   * for a mmu-less system; the user should pass EXTRA_CFLAGS="-DBB_NOMMU"   * for a mmu-less system.
      * on his own.  
    261   */   */
    262  #if defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \  #if ENABLE_NOMMU || \
    263      __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__      (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
    264  #define BB_NOMMU      __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__)
    265    #define BB_MMU 0
    266    #define USE_FOR_NOMMU(...) __VA_ARGS__
    267    #define USE_FOR_MMU(...)
    268    #else
    269    #define BB_MMU 1
    270    #define USE_FOR_NOMMU(...)
    271    #define USE_FOR_MMU(...) __VA_ARGS__
    272  #endif  #endif
    273    
    274  /* Platforms that haven't got dprintf need to implement fdprintf() in  /* Platforms that haven't got dprintf need to implement fdprintf() in
    # Line 205  typedef unsigned smalluint; Line 282  typedef unsigned smalluint;
    282  #endif  #endif
    283    
    284  #if defined(__dietlibc__)  #if defined(__dietlibc__)
    285  static ATTRIBUTE_ALWAYS_INLINE char* strchrnul(const char *s, char c) {  static ALWAYS_INLINE char* strchrnul(const char *s, char c)
    286    {
    287   while (*s && *s != c) ++s;   while (*s && *s != c) ++s;
    288   return (char*)s;   return (char*)s;
    289  }  }
    290  #endif  #endif
    291    
    292  /* Don't use lchown with glibc older than 2.1.x ... uC-libc lacks it */  /* Don't use lchown with glibc older than 2.1.x ... uClibc lacks it */
    293  #if (defined __GLIBC__ && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1) || \  #if (defined __GLIBC__ && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1) || \
    294      defined __UC_LIBC__      defined __UC_LIBC__
    295  # define lchown chown  # define lchown chown
    296  #endif  #endif
    297    
     /* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */  
     /* FIXME: fix tar.c! */  
     #ifndef FNM_LEADING_DIR  
     #define FNM_LEADING_DIR 0  
     #endif  
       
    298  #if (defined __digital__ && defined __unix__)  #if (defined __digital__ && defined __unix__)
    299  #include <standards.h>  #include <standards.h>
    300  #define HAVE_STANDARDS_H  #define HAVE_STANDARDS_H
    # Line 230  static ATTRIBUTE_ALWAYS_INLINE char* str Line 302  static ATTRIBUTE_ALWAYS_INLINE char* str
    302  #define HAVE_INTTYPES_H  #define HAVE_INTTYPES_H
    303  #define PRIu32 "u"  #define PRIu32 "u"
    304    
    305  /* use legacy setpgrp(pidt_,pid_t) for now.  move to platform.c */  /* use legacy setpgrp(pid_t,pid_t) for now.  move to platform.c */
    306  #define bb_setpgrp do { pid_t __me = getpid(); setpgrp(__me,__me); } while (0)  #define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me,__me); } while (0)
    307    
    308  #if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET  #if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
    309  #define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)  #define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
    # Line 247  static ATTRIBUTE_ALWAYS_INLINE char* str Line 319  static ATTRIBUTE_ALWAYS_INLINE char* str
    319  #endif  #endif
    320    
    321  #else  #else
    322  #define bb_setpgrp setpgrp()  #define bb_setpgrp() setpgrp()
    323  #endif  #endif
    324    
    325  #if defined(__linux__)  #if defined(__linux__)
    326  #include <sys/mount.h>  #include <sys/mount.h>
    327  // Make sure we have all the new mount flags we actually try to use.  /* Make sure we have all the new mount flags we actually try to use. */
    328  #ifndef MS_BIND  #ifndef MS_BIND
    329  #define MS_BIND        (1<<12)  #define MS_BIND        (1<<12)
    330  #endif  #endif
    # Line 266  static ATTRIBUTE_ALWAYS_INLINE char* str Line 338  static ATTRIBUTE_ALWAYS_INLINE char* str
    338  #define MS_SILENT      (1<<15)  #define MS_SILENT      (1<<15)
    339  #endif  #endif
    340    
    341  // The shared subtree stuff, which went in around 2.6.15  /* The shared subtree stuff, which went in around 2.6.15. */
    342  #ifndef MS_UNBINDABLE  #ifndef MS_UNBINDABLE
    343  #define MS_UNBINDABLE  (1<<17)  #define MS_UNBINDABLE  (1<<17)
    344  #endif  #endif
    # Line 279  static ATTRIBUTE_ALWAYS_INLINE char* str Line 351  static ATTRIBUTE_ALWAYS_INLINE char* str
    351  #ifndef MS_SHARED  #ifndef MS_SHARED
    352  #define MS_SHARED      (1<<20)  #define MS_SHARED      (1<<20)
    353  #endif  #endif
    354    #ifndef MS_RELATIME
    355    #define MS_RELATIME   (1 << 21)
    356    #endif
    357    
    358  #if !defined(BLKSSZGET)  #if !defined(BLKSSZGET)
    359  #define BLKSSZGET _IO(0x12, 104)  #define BLKSSZGET _IO(0x12, 104)
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