| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org> |
| 2 | * |
| 3 | * GNU Library General Public License (LGPL) version 2 or later. |
| 4 | * |
| 5 | * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details. |
| 6 | */ |
| 7 | |
| 8 | #include <features.h> |
| 9 | |
| 10 | #ifdef __USE_GNU |
| 11 | #include "_stdio.h" |
| 12 | #include <stdarg.h> |
| 13 | |
| 14 | |
| 15 | int vdprintf(int filedes, const char * __restrict format, va_list arg) |
| 16 | { |
| 17 | FILE f; |
| 18 | int rv; |
| 19 | #ifdef __STDIO_BUFFERS |
| 20 | char buf[64]; /* TODO: provide _optional_ buffering? */ |
| 21 | |
| 22 | f.__bufend = (unsigned char *) buf + sizeof(buf); |
| 23 | f.__bufstart = (unsigned char *) buf; |
| 24 | __STDIO_STREAM_DISABLE_GETC(&f); |
| 25 | __STDIO_STREAM_DISABLE_PUTC(&f); |
| 26 | __STDIO_STREAM_INIT_BUFREAD_BUFPOS(&f); |
| 27 | #endif |
| 28 | |
| 29 | /* __STDIO_STREAM_RESET_GCS(&f); */ |
| 30 | #ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__ |
| 31 | f.__cookie = &(f.__filedes); |
| 32 | f.__gcs.read = NULL; |
| 33 | f.__gcs.write = _cs_write; |
| 34 | f.__gcs.seek = NULL; |
| 35 | f.__gcs.close = NULL; |
| 36 | #endif |
| 37 | |
| 38 | f.__filedes = filedes; |
| 39 | f.__modeflags = (__FLAG_NARROW|__FLAG_WRITEONLY|__FLAG_WRITING); |
| 40 | |
| 41 | #ifdef __UCLIBC_HAS_WCHAR__ |
| 42 | f.__ungot_width[0] = 0; |
| 43 | #endif |
| 44 | #ifdef __STDIO_MBSTATE |
| 45 | __INIT_MBSTATE(&(f.__state)); |
| 46 | #endif |
| 47 | |
| 48 | /* _vfprintf_internal doesn't do any locking, locking init is here |
| 49 | * only because of fflush_unlocked. TODO? */ |
| 50 | #if (defined(__STDIO_BUFFERS) || defined(__USE_OLD_VFPRINTF__)) && defined(__UCLIBC_HAS_THREADS__) |
| 51 | f.__user_locking = 1; /* Set user locking. */ |
| 52 | STDIO_INIT_MUTEX(f.__lock); |
| 53 | #endif |
| 54 | f.__nextopen = NULL; |
| 55 | |
| 56 | #ifdef __USE_OLD_VFPRINTF__ |
| 57 | rv = vfprintf(&f, format, arg); |
| 58 | #else |
| 59 | rv = _vfprintf_internal(&f, format, arg); |
| 60 | #endif |
| 61 | |
| 62 | #ifdef __STDIO_BUFFERS |
| 63 | /* If not buffering, then fflush is unnecessary. */ |
| 64 | if ((rv > 0) && fflush_unlocked(&f)) { |
| 65 | rv = -1; |
| 66 | } |
| 67 | #endif |
| 68 | |
| 69 | assert(rv >= -1); |
| 70 | |
| 71 | return rv; |
| 72 | } |
| 73 | libc_hidden_def(vdprintf) |
| 74 | #endif |