From 0f11ac27b9b9dbdde216a700434b7fcdc47e1093 Mon Sep 17 00:00:00 2001 From: patacongo Date: Sat, 10 Nov 2012 16:19:12 +0000 Subject: Still trying to recover directory contents git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5330 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/libc/misc/Make.defs | 69 +++++++++ nuttx/libc/misc/lib_crc32.c | 123 ++++++++++++++++ nuttx/libc/misc/lib_dbg.c | 165 ++++++++++++++++++++++ nuttx/libc/misc/lib_dumpbuffer.c | 129 +++++++++++++++++ nuttx/libc/misc/lib_filesem.c | 145 +++++++++++++++++++ nuttx/libc/misc/lib_init.c | 207 +++++++++++++++++++++++++++ nuttx/libc/misc/lib_match.c | 148 +++++++++++++++++++ nuttx/libc/misc/lib_sendfile.c | 297 +++++++++++++++++++++++++++++++++++++++ nuttx/libc/misc/lib_streamsem.c | 90 ++++++++++++ 9 files changed, 1373 insertions(+) create mode 100644 nuttx/libc/misc/Make.defs create mode 100644 nuttx/libc/misc/lib_crc32.c create mode 100644 nuttx/libc/misc/lib_dbg.c create mode 100644 nuttx/libc/misc/lib_dumpbuffer.c create mode 100644 nuttx/libc/misc/lib_filesem.c create mode 100644 nuttx/libc/misc/lib_init.c create mode 100644 nuttx/libc/misc/lib_match.c create mode 100644 nuttx/libc/misc/lib_sendfile.c create mode 100644 nuttx/libc/misc/lib_streamsem.c (limited to 'nuttx/libc/misc') diff --git a/nuttx/libc/misc/Make.defs b/nuttx/libc/misc/Make.defs new file mode 100644 index 000000000..c12533f75 --- /dev/null +++ b/nuttx/libc/misc/Make.defs @@ -0,0 +1,69 @@ +############################################################################ +# lib/misc/Make.defs +# +# Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name NuttX nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +# Add the internal C files to the build + +CSRCS += lib_init.c lib_filesem.c + +# Add C files that depend on file OR socket descriptors + +ifneq ($(CONFIG_NFILE_DESCRIPTORS),0) + +CSRCS += lib_sendfile.c +ifneq ($(CONFIG_NFILE_STREAMS),0) +CSRCS += lib_streamsem.c +endif + +else +ifneq ($(CONFIG_NSOCKET_DESCRIPTORS),0) + +CSRCS += lib_sendfile.c +ifneq ($(CONFIG_NFILE_STREAMS),0) +CSRCS += lib_streamsem.c +endif + +endif +endif + +# Add the miscellaneous C files to the build + +CSRCS += lib_match.c +CSRCS += lib_crc32.c +CSRCS += lib_dbg.c lib_dumpbuffer.c + +# Add the misc directory to the build + +DEPPATH += --dep-path misc +VPATH += :misc diff --git a/nuttx/libc/misc/lib_crc32.c b/nuttx/libc/misc/lib_crc32.c new file mode 100644 index 000000000..f851598e0 --- /dev/null +++ b/nuttx/libc/misc/lib_crc32.c @@ -0,0 +1,123 @@ +/************************************************************************************************ + * lib/misc/lib_crc32.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. + * + * The logic in this file was developed by Gary S. Brown: + * + * COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or code or tables + * extracted from it, as desired without restriction. + * + * First, the polynomial itself and its table of feedback terms. The polynomial is: + * + * X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 + * + * Note that we take it "backwards" and put the highest-order term in the lowest-order bit. + * The X^32 term is "implied"; the LSB is the X^31 term, etc. The X^0 term (usually shown + * as "+1") results in the MSB being 1 + * + * Note that the usual hardware shift register implementation, which is what we're using + * (we're merely optimizing it by doing eight-bit chunks at a time) shifts bits into the + * lowest-order term. In our implementation, that means shifting towards the right. Why + * do we do it this way? Because the calculated CRC must be transmitted in order from + * highest-order term to lowest-order term. UARTs transmit characters in order from LSB + * to MSB. By storing the CRC this way we hand it to the UART in the order low-byte to + * high-byte; the UART sends each low-bit to hight-bit; and the result is transmission bit + * by bit from highest- to lowest-order term without requiring any bit shuffling on our + * part. Reception works similarly + * + * The feedback terms table consists of 256, 32-bit entries. Notes + * + * - The table can be generated at runtime if desired; code to do so is shown later. It + * might not be obvious, but the feedback terms simply represent the results of eight + * shift/xor operations for all combinations of data and CRC register values + * + * - The values must be right-shifted by eight bits by the updcrc logic; the shift must + * be u_(bring in zeroes). On some hardware you could probably optimize the shift in + * assembler by using byte-swap instructions polynomial $edb88320 + ************************************************************************************************/ + +/************************************************************************************************ + * Included Files + ************************************************************************************************/ + +#include +#include +#include + +/************************************************************************************************ + * Private Data + ************************************************************************************************/ + +static const uint32_t crc32_tab[] = +{ + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, + 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, + 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, + 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, + 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, + 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, + 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, + 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, + 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, + 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, + 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, + 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, + 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, + 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, + 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, + 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, + 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, + 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d +}; + +/************************************************************************************************ + * Public Functions + ************************************************************************************************/ +/************************************************************************************************ + * Name: crc32part + * + * Description: + * Continue CRC calculation on a part of the buffer. + * + ************************************************************************************************/ + +uint32_t crc32part(FAR const uint8_t *src, size_t len, uint32_t crc32val) +{ + size_t i; + + for (i = 0; i < len; i++) + { + crc32val = crc32_tab[(crc32val ^ src[i]) & 0xff] ^ (crc32val >> 8); + } + return crc32val; +} + +/************************************************************************************************ + * Name: crc32 + * + * Description: + * Return a 32-bit CRC of the contents of the 'src' buffer, length 'len' + * + ************************************************************************************************/ + +uint32_t crc32(FAR const uint8_t *src, size_t len) +{ + return crc32part(src, len, 0); +} diff --git a/nuttx/libc/misc/lib_dbg.c b/nuttx/libc/misc/lib_dbg.c new file mode 100644 index 000000000..aacdaa30a --- /dev/null +++ b/nuttx/libc/misc/lib_dbg.c @@ -0,0 +1,165 @@ +/**************************************************************************** + * lib/misc/lib_dbg.c + * + * Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include + +#include "lib_internal.h" + +/**************************************************************************** + * Global Variables + ****************************************************************************/ + +/* Debug output is initially disabled */ + +#ifdef CONFIG_DEBUG_ENABLE +bool g_dbgenable; +#endif + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: dbg_enable + * + * Description: + * Enable or disable debug output. + * + ****************************************************************************/ + +#ifdef CONFIG_DEBUG_ENABLE +void dbg_enable(bool enable) +{ + g_dbgenable = enable; +} +#endif + +/**************************************************************************** + * Name: dbg, lldbg, vdbg + * + * Description: + * If the cross-compiler's pre-processor does not support variable + * length arguments, then these additional APIs will be built. + * + ****************************************************************************/ + +#ifndef CONFIG_CPP_HAVE_VARARGS +#ifdef CONFIG_DEBUG +int dbg(const char *format, ...) +{ + va_list ap; + int ret; + +#ifdef CONFIG_DEBUG_ENABLE + ret = 0; + if (g_dbgenable) +#endif + { + va_start(ap, format); + ret = lib_rawvprintf(format, ap); + va_end(ap); + } + + return ret; +} + +#ifdef CONFIG_ARCH_LOWPUTC +int lldbg(const char *format, ...) +{ + va_list ap; + int ret; + +#ifdef CONFIG_DEBUG_ENABLE + ret = 0; + if (g_dbgenable) +#endif + { + va_start(ap, format); + ret = lib_lowvprintf(format, ap); + va_end(ap); + } + + return ret; +} +#endif + +#ifdef CONFIG_DEBUG_VERBOSE +int vdbg(const char *format, ...) +{ + va_list ap; + int ret; + +#ifdef CONFIG_DEBUG_ENABLE + ret = 0; + if (g_dbgenable) +#endif + { + va_start(ap, format); + ret = lib_rawvprintf(format, ap); + va_end(ap); + } + + return ret; +} + +#ifdef CONFIG_ARCH_LOWPUTC +int llvdbg(const char *format, ...) +{ + va_list ap; + int ret; + +#ifdef CONFIG_DEBUG_ENABLE + ret = 0; + if (g_dbgenable) +#endif + { + va_start(ap, format); + ret = lib_lowvprintf(format, ap); + va_end(ap); + } + + return ret; +} +#endif /* CONFIG_ARCH_LOWPUTC */ +#endif /* CONFIG_DEBUG_VERBOSE */ +#endif /* CONFIG_DEBUG */ +#endif /* CONFIG_CPP_HAVE_VARARGS */ diff --git a/nuttx/libc/misc/lib_dumpbuffer.c b/nuttx/libc/misc/lib_dumpbuffer.c new file mode 100644 index 000000000..155468ca1 --- /dev/null +++ b/nuttx/libc/misc/lib_dumpbuffer.c @@ -0,0 +1,129 @@ +/**************************************************************************** + * lib/misc/lib_dumpbuffer.c + * + * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include + +#include +#include + +/**************************************************************************** + * Pre-processor definitions + ****************************************************************************/ + +/* Select the lowest level debug interface available */ + +#ifdef CONFIG_CPP_HAVE_VARARGS +# ifdef CONFIG_ARCH_LOWPUTC +# define message(format, arg...) lib_lowprintf(format, ##arg) +# else +# define message(format, arg...) lib_rawprintf(format, ##arg) +# endif +#else +# ifdef CONFIG_ARCH_LOWPUTC +# define message lib_lowprintf +# else +# define message lib_rawprintf +# endif +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: lib_dumpbuffer + * + * Description: + * Do a pretty buffer dump + * + ****************************************************************************/ + +void lib_dumpbuffer(FAR const char *msg, FAR const uint8_t *buffer, unsigned int buflen) +{ + int i, j, k; + + message("%s (%p):\n", msg, buffer); + for (i = 0; i < buflen; i += 32) + { + message("%04x: ", i); + for (j = 0; j < 32; j++) + { + k = i + j; + + if (j == 16) + { + message(" "); + } + + if (k < buflen) + { + message("%02x", buffer[k]); + } + else + { + message(" "); + } + } + + message(" "); + for (j = 0; j < 32; j++) + { + k = i + j; + + if (j == 16) + { + message(" "); + } + + if (k < buflen) + { + if (buffer[k] >= 0x20 && buffer[k] < 0x7f) + { + message("%c", buffer[k]); + } + else + { + message("."); + } + } + } + message("\n"); + } +} diff --git a/nuttx/libc/misc/lib_filesem.c b/nuttx/libc/misc/lib_filesem.c new file mode 100644 index 000000000..1d1f25c2f --- /dev/null +++ b/nuttx/libc/misc/lib_filesem.c @@ -0,0 +1,145 @@ +/************************************************************************ + * lib/misc/lib_filesem.c + * + * Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include + +#include +#include +#include +#include +#include + +#include "lib_internal.h" + +#if CONFIG_STDIO_BUFFER_SIZE > 0 + +/************************************************************************ + * Pre-processor Definitions + ************************************************************************/ + +/************************************************************************ + * Private Data + ************************************************************************/ + +/************************************************************************ + * Global Functions + ************************************************************************/ + +/************************************************************************ + * lib_sem_initialize + ************************************************************************/ + +void lib_sem_initialize(FAR struct file_struct *stream) +{ + /* Initialize the LIB semaphore to one (to support one-at- + * a-time access to private data sets. + */ + + (void)sem_init(&stream->fs_sem, 0, 1); + + stream->fs_holder = -1; + stream->fs_counts = 0; +} + +/************************************************************************ + * lib_take_semaphore + ************************************************************************/ + +void lib_take_semaphore(FAR struct file_struct *stream) +{ + pid_t my_pid = getpid(); + + /* Do I already have the semaphore? */ + + if (stream->fs_holder == my_pid) + { + /* Yes, just increment the number of references that I have */ + + stream->fs_counts++; + } + else + { + /* Take the semaphore (perhaps waiting) */ + + while (sem_wait(&stream->fs_sem) != 0) + { + /* The only case that an error should occr here is if + * the wait was awakened by a signal. + */ + + ASSERT(get_errno() == EINTR); + } + + /* We have it. Claim the stak and return */ + + stream->fs_holder = my_pid; + stream->fs_counts = 1; + } +} + +/************************************************************************ + * lib_give_semaphore + ************************************************************************/ + +void lib_give_semaphore(FAR struct file_struct *stream) +{ + pid_t my_pid = getpid(); + + /* I better be holding at least one reference to the semaphore */ + + ASSERT(stream->fs_holder == my_pid); + + /* Do I hold multiple references to the semphore */ + + if (stream->fs_counts > 1) + { + /* Yes, just release one count and return */ + + stream->fs_counts--; + } + else + { + /* Nope, this is the last reference I have */ + + stream->fs_holder = -1; + stream->fs_counts = 0; + ASSERT(sem_post(&stream->fs_sem) == 0); + } +} +#endif /* CONFIG_STDIO_BUFFER_SIZE */ diff --git a/nuttx/libc/misc/lib_init.c b/nuttx/libc/misc/lib_init.c new file mode 100644 index 000000000..3403a837b --- /dev/null +++ b/nuttx/libc/misc/lib_init.c @@ -0,0 +1,207 @@ +/************************************************************ + * lib/misc/lib_init.c + * + * Copyright (C) 2007, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************/ + +/************************************************************ + * Included Files + ************************************************************/ + +#include + +#include +#include +#include + +#include +#include +#include + +#include "lib_internal.h" + +/************************************************************ + * Definitions + ************************************************************/ + +/************************************************************ + * Private Variables + ************************************************************/ + +/************************************************************ + * Private Functions + ************************************************************/ + +/************************************************************ + * Public Functions + ************************************************************/ + +/************************************************************ + * lib_initialize + ************************************************************/ + +/* General library initialization hook */ + +void weak_const_function lib_initialize(void) +{ +} + +#if CONFIG_NFILE_STREAMS > 0 +/* The following function is called when a new TCB is allocated. It + * creates the streamlist instance that is stored in the TCB. + */ + +FAR struct streamlist *lib_alloclist(void) +{ + FAR struct streamlist *list; + list = (FAR struct streamlist*)lib_zalloc(sizeof(struct streamlist)); + if (list) + { + int i; + + /* Start with a reference count of one */ + + list->sl_crefs = 1; + + /* Initialize the list access mutex */ + + (void)sem_init(&list->sl_sem, 0, 1); + + /* Initialize each FILE structure */ + + for (i = 0; i < CONFIG_NFILE_STREAMS; i++) + { + /* Clear the IOB */ + + memset(&list->sl_streams[i], 0, sizeof(FILE)); + + /* Indicate not opened */ + + list->sl_streams[i].fs_filedes = -1; + + /* Initialize the stream semaphore to one to support one-at- + * a-time access to private data sets. + */ + + lib_sem_initialize(&list->sl_streams[i]); + } + } + return list; + +} + +/* This function is called when a TCB is closed (such as with + * pthread_create(). It increases the reference count on the stream + * list. + */ + +void lib_addreflist(FAR struct streamlist *list) +{ + if (list) + { + /* Increment the reference count on the list. + * NOTE: that we disable interrupts to do this + * (vs. taking the list semaphore). We do this + * because file cleanup operations often must be + * done from the IDLE task which cannot wait + * on semaphores. + */ + + register irqstate_t flags = irqsave(); + list->sl_crefs++; + irqrestore(flags); + } +} + +/* this function is called when a TCB is destroyed. Note that is + * does not close the file by release this inode. This happens + * separately when the file descriptor list is freed. + */ + +void lib_releaselist(FAR struct streamlist *list) +{ + int crefs; + if (list) + { + /* Decrement the reference count on the list. + * NOTE: that we disable interrupts to do this + * (vs. taking the list semaphore). We do this + * because file cleanup operations often must be + * done from the IDLE task which cannot wait + * on semaphores. + */ + + register irqstate_t flags = irqsave(); + crefs = --(list->sl_crefs); + irqrestore(flags); + + /* If the count decrements to zero, then there is no reference + * to the structure and it should be deallocated. Since there + * are references, it would be an error if any task still held + * a reference to the list's semaphore. + */ + + if (crefs <= 0) + { +#if CONFIG_STDIO_BUFFER_SIZE > 0 + int i; +#endif + /* Destroy the semaphore and release the filelist */ + + (void)sem_destroy(&list->sl_sem); + + /* Release each stream in the list */ + +#if CONFIG_STDIO_BUFFER_SIZE > 0 + for (i = 0; i < CONFIG_NFILE_STREAMS; i++) + { + /* Destroy the semaphore that protects the IO buffer */ + + (void)sem_destroy(&list->sl_streams[i].fs_sem); + + /* Release the IO buffer */ + if (list->sl_streams[i].fs_bufstart) + { + sched_free(list->sl_streams[i].fs_bufstart); + } + } +#endif + /* Finally, release the list itself */ + + sched_free(list); + } + } +} + +#endif /* CONFIG_NFILE_STREAMS */ + + diff --git a/nuttx/libc/misc/lib_match.c b/nuttx/libc/misc/lib_match.c new file mode 100644 index 000000000..18e0632ec --- /dev/null +++ b/nuttx/libc/misc/lib_match.c @@ -0,0 +1,148 @@ +/**************************************************************************** + * lib/misc/lib_match.c - simple shell-style filename matcher + * + * Simple shell-style filename pattern matcher written by Jef Poskanzer + * This pattern matcher only handles '?', '*' and '**', and multiple + * patterns separated by '|'. + * + * Copyright © 1995,2000 by Jef Poskanzer . + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: match_one + * + * Description: + * Does all of the work for one '|' delimited pattern + * + * Returned Value: + * Returns 1 (match) or 0 (no-match). + * + ****************************************************************************/ + +static int match_one(const char *pattern, int patlen, const char *string) +{ + const char *p; + int pl; + int i; + + for (p = pattern; p - pattern < patlen; p++, string++) + { + if (*p == '?' && *string != '\0') + { + continue; + } + + if (*p == '*') + { + p++; + if (*p == '*') + { + /* Double-wildcard matches anything. */ + + p++; + i = strlen(string); + } + else + { + /* Single-wildcard matches anything but slash. */ + + i = strcspn(string, "/"); + } + + pl = patlen - (p - pattern); + for (; i >= 0; i--) + { + if (match_one(p, pl, &(string[i]))) + { + return 1; + } + } + return 0; + } + + if (*p != *string) + { + return 0; + } + } + + if (*string == '\0') + { + return 1; + } + return 0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: match + * + * Description: + * Simple shell-style filename pattern matcher written by Jef Poskanzer + * This pattern matcher only handles '?', '*' and '**', and multiple + * patterns separated by '|'. + * + * Returned Value: + * Returns 1 (match) or 0 (no-match). + * + ****************************************************************************/ + +int match(const char *pattern, const char *string) +{ + const char *or; + + for (;;) + { + or = strchr(pattern, '|'); + if (or == (char *)0) + { + return match_one(pattern, strlen(pattern), string); + } + + if (match_one(pattern, or - pattern, string)) + { + return 1; + } + + pattern = or + 1; + } +} + diff --git a/nuttx/libc/misc/lib_sendfile.c b/nuttx/libc/misc/lib_sendfile.c new file mode 100644 index 000000000..a82eb325e --- /dev/null +++ b/nuttx/libc/misc/lib_sendfile.c @@ -0,0 +1,297 @@ +/************************************************************************ + * lib/misc/lib_streamsem.c + * + * Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include + +#include +#include +#include +#include +#include + +#if CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0 + +/************************************************************************ + * Private types + ************************************************************************/ + +/************************************************************************ + * Private Variables + ************************************************************************/ + +/************************************************************************ + * Public Variables + ************************************************************************/ + +/************************************************************************ + * Private Functions + ************************************************************************/ + +/************************************************************************ + * Public Functions + ************************************************************************/ + +/************************************************************************ + * Name: sendfile + * + * Description: + * sendfile() copies data between one file descriptor and another. + * sendfile() basically just wraps a sequence of reads() and writes() + * to perform a copy. It serves a purpose in systems where there is + * a penalty for copies to between user and kernal space, but really + * nothing in NuttX but provide some Linux compatible (and adding + * another 'almost standard' interface). + * + * NOTE: This interface is *not* specified in POSIX.1-2001, or other + * standards. The implementation here is very similar to the Linux + * sendfile interface. Other UNIX systems implement sendfile() with + * different semantics and prototypes. sendfile() should not be used + * in portable programs. + * + * Input Parmeters: + * infd - A file (or socket) descriptor opened for reading + * outfd - A descriptor opened for writing. + * offset - If 'offset' is not NULL, then it points to a variable + * holding the file offset from which sendfile() will start + * reading data from 'infd'. When sendfile() returns, this + * variable will be set to the offset of the byte following + * the last byte that was read. If 'offset' is not NULL, + * then sendfile() does not modify the current file offset of + * 'infd'; otherwise the current file offset is adjusted to + * reflect the number of bytes read from 'infd.' + * + * If 'offset' is NULL, then data will be read from 'infd' + * starting at the current file offset, and the file offset + * will be updated by the call. + * count - The number of bytes to copy between the file descriptors. + * + * Returned Value: + * If the transfer was successful, the number of bytes written to outfd is + * returned. On error, -1 is returned, and errno is set appropriately. + * There error values are those returned by read() or write() plus: + * + * EINVAL - Bad input parameters. + * ENOMEM - Could not allocated an I/O buffer + * + ************************************************************************/ + +ssize_t sendfile(int outfd, int infd, off_t *offset, size_t count) +{ + FAR uint8_t *iobuffer; + FAR uint8_t *wrbuffer; + off_t startpos = 0; + ssize_t nbytesread; + ssize_t nbyteswritten; + size_t ntransferred; + bool endxfr; + + /* Get the current file position. */ + + if (offset) + { + /* Use lseek to get the current file position */ + + startpos = lseek(infd, 0, SEEK_CUR); + if (startpos == (off_t)-1) + { + return ERROR; + } + + /* Use lseek again to set the new file position */ + + if (lseek(infd, *offset, SEEK_SET) == (off_t)-1) + { + return ERROR; + } + } + + /* Allocate an I/O buffer */ + + iobuffer = (FAR void *)malloc(CONFIG_LIB_SENDFILE_BUFSIZE); + if (!iobuffer) + { + set_errno(ENOMEM); + return ERROR; + } + + /* Now transfer 'count' bytes from the infd to the outfd */ + + for (ntransferred = 0, endxfr = false; ntransferred < count && !endxfr; ) + { + /* Loop until the read side of the transfer comes to some conclusion */ + + do + { + /* Read a buffer of data from the infd */ + + nbytesread = read(infd, iobuffer, CONFIG_LIB_SENDFILE_BUFSIZE); + + /* Check for end of file */ + + if (nbytesread == 0) + { + /* End of file. Break out and return current number of bytes + * transferred. + */ + + endxfr = true; + break; + } + + /* Check for a read ERROR. EINTR is a special case. This function + * should break out and return an error if EINTR is returned and + * no data has been transferred. But what should it do if some + * data has been transferred? I suppose just continue? + */ + + else if (nbytesread < 0) + { + /* EINTR is not an error (but will still stop the copy) */ + +#ifndef CONFIG_DISABLE_SIGNALS + if (errno != EINTR || ntransferred == 0) +#endif + { + /* Read error. Break out and return the error condition. */ + + ntransferred = ERROR; + endxfr = true; + break; + } + } + } + while (nbytesread < 0); + + /* Was anything read? */ + + if (!endxfr) + { + /* Yes.. Loop until the read side of the transfer comes to some + * conclusion. + */ + + wrbuffer = iobuffer; + do + { + /* Write the buffer of data to the outfd */ + + nbyteswritten = write(outfd, wrbuffer, nbytesread); + + /* Check for a complete (or parial) write. write() should not + * return zero. + */ + + if (nbyteswritten >= 0) + { + /* Advance the buffer pointer and decrement the number of bytes + * remaining in the iobuffer. Typically, nbytesread will now + * be zero. + */ + + wrbuffer += nbyteswritten; + nbytesread -= nbyteswritten; + + /* Increment the total number of bytes successfully transferred. */ + + ntransferred += nbyteswritten; + } + + /* Otherwise an error occurred */ + + else + { + /* Check for a read ERROR. EINTR is a special case. This + * function should break out and return an error if EINTR + * is returned and no data has been transferred. But what + * should it do if some data has been transferred? I + * suppose just continue? + */ + +#ifndef CONFIG_DISABLE_SIGNALS + if (errno != EINTR || ntransferred == 0) +#endif + { + /* Write error. Break out and return the error condition */ + + ntransferred = ERROR; + endxfr = true; + break; + } + } + } + while (nbytesread > 0); + } + } + + /* Release the I/O buffer */ + + free(iobuffer); + + /* Return the current file position */ + + if (offset) + { + /* Use lseek to get the current file position */ + + off_t curpos = lseek(infd, 0, SEEK_CUR); + if (curpos == (off_t)-1) + { + return ERROR; + } + + /* Return the current file position */ + + *offset = curpos; + + /* Use lseek again to restore the original file position */ + + if (lseek(infd, startpos, SEEK_SET) == (off_t)-1) + { + return ERROR; + } + } + + /* Finally return the number of bytes actually transferred (or ERROR + * if any failure occurred). + */ + + return ntransferred; +} + +#endif /* CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0 */ diff --git a/nuttx/libc/misc/lib_streamsem.c b/nuttx/libc/misc/lib_streamsem.c new file mode 100644 index 000000000..fdf494e75 --- /dev/null +++ b/nuttx/libc/misc/lib_streamsem.c @@ -0,0 +1,90 @@ +/************************************************************************ + * lib/misc/lib_streamsem.c + * + * Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include + +#include +#include +#include +#include +#include +#include + +#include "lib_internal.h" + +/************************************************************************ + * Private types + ************************************************************************/ + +/************************************************************************ + * Private Variables + ************************************************************************/ + +/************************************************************************ + * Public Variables + ************************************************************************/ + +/************************************************************************ + * Private Functions + ************************************************************************/ + +/************************************************************************ + * Public Functions + ************************************************************************/ + +void stream_semtake(FAR struct streamlist *list) +{ + /* Take the semaphore (perhaps waiting) */ + + while (sem_wait(&list->sl_sem) != 0) + { + /* The only case that an error should occr here is if + * the wait was awakened by a signal. + */ + + ASSERT(get_errno() == EINTR); + } +} + +void stream_semgive(FAR struct streamlist *list) +{ + sem_post(&list->sl_sem); +} + + -- cgit v1.2.3