lib/replace/README

   1 This subsystem ensures that we can always use a certain core set of
   2 functions and types, that are either provided by the OS or by replacement
   3 functions / definitions in this subsystem. The aim is to try to stick
   4 to POSIX functions in here as much as possible. Convenience functions
   5 that are available on no platform at all belong in other subsystems
   6 (such as LIBUTIL).
   7
   8 The following functions are guaranteed:
   9
  10 ftruncate
  11 strlcpy
  12 strlcat
  13 mktime
  14 rename
  15 initgroups
  16 memmove
  17 strdup
  18 setlinebuf
  19 vsyslog
  20 timegm
  21 setenv
  22 unsetenv
  23 strndup
  24 strnlen
  25 waitpid
  26 seteuid
  27 setegid
  28 asprintf
  29 snprintf
  30 vasprintf
  31 vsnprintf
  32 opendir
  33 readdir
  34 telldir
  35 seekdir
  36 closedir
  37 dlopen
  38 dlclose
  39 dlsym
  40 dlerror
  41 chroot
  42 bzero
  43 strerror
  44 errno
  45 mkdtemp
  46 mkstemp (a secure one!)
  47 pread
  48 pwrite
  49 chown
  50 lchown
  51 getpass
  52 readline (the library)
  53 inet_ntoa
  54 inet_ntop
  55 inet_pton
  56 inet_aton
  57 strtoll
  58 strtoull
  59 socketpair
  60 strptime
  61 getaddrinfo
  62 freeaddrinfo
  63 getnameinfo
  64 gai_strerror
  65 getifaddrs
  66 freeifaddrs
  67 utime
  68 utimes
  69 dup2
  70 link
  71 readlink
  72 symlink
  73 realpath
  74
  75 Types:
  76 bool
  77 socklen_t
  78 uint_t
  79 uint{8,16,32,64}_t
  80 int{8,16,32,64}_t
  81 intptr_t
  82 sig_atomic_t
  83
  84 Constants:
  85 PATH_NAME_MAX
  86 UINT{16,32,64}_MAX
  87 INT32_MAX
  88 RTLD_LAZY
  89 HOST_NAME_MAX
  90 UINT16_MAX
  91 UINT32_MAX
  92 UINT64_MAX
  93 CHAR_BIT
  94
  95 Macros:
  96 va_copy
  97 __FUNCTION__
  98 __FILE__
  99 __LINE__
 100 __LINESTR__
 101 __location__
 102 __STRING
 103 __STRINGSTRING
 104 MIN
 105 MAX
 106 QSORT_CAST
 107 ZERO_STRUCT
 108 ZERO_STRUCTP
 109 ZERO_STRUCTPN
 110 ZERO_ARRAY
 111 ARRAY_SIZE
 112 PTR_DIFF
 113
 114 Headers:
 115 stdint.h
 116 stdbool.h
 117
 118 Optional C keywords:
 119 volatile
 120
 121 Prerequisites:
 122 memset (for bzero)
 123 syslog (for vsyslog)
 124 mktemp (for mkstemp and mkdtemp)