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