[444] | 1 | /* |
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| 2 | * Copyright (c) 1990 The Regents of the University of California. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms are permitted |
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| 6 | * provided that the above copyright notice and this paragraph are |
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| 7 | * duplicated in all such forms and that any documentation, |
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| 8 | * advertising materials, and other materials related to such |
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| 9 | * distribution and use acknowledge that the software was developed |
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| 10 | * by the University of California, Berkeley. The name of the |
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| 11 | * University may not be used to endorse or promote products derived |
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| 12 | * from this software without specific prior written permission. |
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| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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| 15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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| 16 | */ |
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| 17 | |
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| 18 | /* |
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| 19 | FUNCTION |
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| 20 | <<fputs>>, <<fputs_unlocked>>---write a character string in a file or stream |
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| 21 | |
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| 22 | INDEX |
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| 23 | fputs |
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| 24 | INDEX |
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| 25 | fputs_unlocked |
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| 26 | INDEX |
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| 27 | _fputs_r |
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| 28 | INDEX |
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| 29 | _fputs_unlocked_r |
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| 30 | |
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| 31 | SYNOPSIS |
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| 32 | #include <stdio.h> |
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| 33 | int fputs(const char *restrict <[s]>, FILE *restrict <[fp]>); |
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| 34 | |
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| 35 | #define _GNU_SOURCE |
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| 36 | #include <stdio.h> |
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| 37 | int fputs_unlocked(const char *restrict <[s]>, FILE *restrict <[fp]>); |
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| 38 | |
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| 39 | #include <stdio.h> |
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| 40 | int _fputs_r(struct _reent *<[ptr]>, const char *restrict <[s]>, FILE *restrict <[fp]>); |
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| 41 | |
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| 42 | #include <stdio.h> |
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| 43 | int _fputs_unlocked_r(struct _reent *<[ptr]>, const char *restrict <[s]>, FILE *restrict <[fp]>); |
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| 44 | |
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| 45 | DESCRIPTION |
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| 46 | <<fputs>> writes the string at <[s]> (but without the trailing null) |
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| 47 | to the file or stream identified by <[fp]>. |
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| 48 | |
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| 49 | <<fputs_unlocked>> is a non-thread-safe version of <<fputs>>. |
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| 50 | <<fputs_unlocked>> may only safely be used within a scope |
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| 51 | protected by flockfile() (or ftrylockfile()) and funlockfile(). This |
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| 52 | function may safely be used in a multi-threaded program if and only |
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| 53 | if they are called while the invoking thread owns the (FILE *) |
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| 54 | object, as is the case after a successful call to the flockfile() or |
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| 55 | ftrylockfile() functions. If threads are disabled, then |
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| 56 | <<fputs_unlocked>> is equivalent to <<fputs>>. |
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| 57 | |
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| 58 | <<_fputs_r>> and <<_fputs_unlocked_r>> are simply reentrant versions of the |
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| 59 | above that take an additional reentrant struct pointer argument: <[ptr]>. |
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| 60 | |
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| 61 | RETURNS |
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| 62 | If successful, the result is <<0>>; otherwise, the result is <<EOF>>. |
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| 63 | |
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| 64 | PORTABILITY |
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| 65 | ANSI C requires <<fputs>>, but does not specify that the result on |
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| 66 | success must be <<0>>; any non-negative value is permitted. |
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| 67 | |
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| 68 | <<fputs_unlocked>> is a GNU extension. |
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| 69 | |
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| 70 | Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, |
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| 71 | <<lseek>>, <<read>>, <<sbrk>>, <<write>>. |
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| 72 | */ |
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| 73 | |
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| 74 | #include <_ansi.h> |
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| 75 | #include <stdio.h> |
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| 76 | #include <string.h> |
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| 77 | #include "fvwrite.h" |
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| 78 | #include "local.h" |
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| 79 | |
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| 80 | #ifdef __IMPL_UNLOCKED__ |
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| 81 | #define _fputs_r _fputs_unlocked_r |
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| 82 | #define fputs fputs_unlocked |
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| 83 | #endif |
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| 84 | |
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| 85 | /* |
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| 86 | * Write the given string to the given file. |
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| 87 | */ |
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| 88 | int |
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| 89 | _fputs_r (struct _reent * ptr, |
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| 90 | char const *__restrict s, |
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| 91 | FILE *__restrict fp) |
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| 92 | { |
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| 93 | #ifdef _FVWRITE_IN_STREAMIO |
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| 94 | int result; |
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| 95 | struct __suio uio; |
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| 96 | struct __siov iov; |
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| 97 | |
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| 98 | iov.iov_base = s; |
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| 99 | iov.iov_len = uio.uio_resid = strlen (s); |
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| 100 | uio.uio_iov = &iov; |
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| 101 | uio.uio_iovcnt = 1; |
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| 102 | |
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| 103 | CHECK_INIT(ptr, fp); |
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| 104 | |
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| 105 | _newlib_flockfile_start (fp); |
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| 106 | ORIENT (fp, -1); |
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| 107 | result = __sfvwrite_r (ptr, fp, &uio); |
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| 108 | _newlib_flockfile_end (fp); |
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| 109 | return result; |
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| 110 | #else |
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| 111 | const char *p = s; |
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| 112 | |
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| 113 | CHECK_INIT(ptr, fp); |
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| 114 | |
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| 115 | _newlib_flockfile_start (fp); |
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| 116 | ORIENT (fp, -1); |
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| 117 | /* Make sure we can write. */ |
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| 118 | if (cantwrite (ptr, fp)) |
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| 119 | goto error; |
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| 120 | |
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| 121 | while (*p) |
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| 122 | { |
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| 123 | if (__sputc_r (ptr, *p++, fp) == EOF) |
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| 124 | goto error; |
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| 125 | } |
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| 126 | _newlib_flockfile_exit (fp); |
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| 127 | return 0; |
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| 128 | |
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| 129 | error: |
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| 130 | _newlib_flockfile_end (fp); |
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| 131 | return EOF; |
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| 132 | #endif |
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| 133 | } |
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| 134 | |
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| 135 | #ifndef _REENT_ONLY |
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| 136 | int |
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| 137 | fputs (char const *__restrict s, |
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| 138 | FILE *__restrict fp) |
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| 139 | { |
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| 140 | return _fputs_r (_REENT, s, fp); |
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| 141 | } |
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| 142 | #endif /* !_REENT_ONLY */ |
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