b92aeb8209
arch/arm/src/eoss3/eoss3_serial.c:
arch/arm/src/imxrt/hardware/imxrt_flexcan.h:
arch/arm/src/imxrt/imxrt_flexcan.c:
arch/arm/src/imxrt/imxrt_flexpwm.c:
arch/arm/src/imxrt/imxrt_lpi2c.c:
arch/arm/src/kinetis/kinetis_flexcan.c:
arch/arm/src/nrf52/hardware/nrf52_rtc.h:
arch/arm/src/nrf52/nrf52_clockconfig.c:
arch/arm/src/nrf52/nrf52_radio.c:
arch/arm/src/nrf52/nrf52_tim.c:
arch/arm/src/rtl8720c/amebaz_depend.c:
arch/arm/src/s32k1xx/Kconfig:
arch/arm/src/s32k1xx/s32k1xx_flexcan.c:
arch/arm/src/s32k1xx/s32k1xx_lpi2c.c:
arch/arm/src/sama5/hardware/sam_sdmmc.h:
arch/arm/src/sama5/sam_gmac.c:
arch/arm/src/samd5e5/sam_wdt.c:
arch/avr/src/avr32/up_exceptions.S:
arch/avr/src/avr32/up_fullcontextrestore.S:
arch/renesas/src/rx65n/rx65n_dtc.c:
arch/renesas/src/rx65n/rx65n_usbhost.c:
arch/risc-v/src/esp32c3/esp32c3_tickless.c:
boards/arm/stm32h7/stm32h747i-disco/include/board.h:
include/nuttx/lcd/ili9225.h:
libs/libc/stdio/lib_fgetpos.c:
libs/libc/stdio/lib_fseek.c:
libs/libc/stdio/lib_fsetpos.c:
* Fix typos.
88 lines
3.0 KiB
C
88 lines
3.0 KiB
C
/****************************************************************************
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* libs/libc/stdio/lib_fseek.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: fseek
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*
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* Description:
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* The fseek() function sets the file position indicator for the stream
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* pointed to by stream. The new position, measured in bytes, is obtained
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* by adding offset bytes to the position specified by whence. If whence is
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* set to SEEK_SET, SEEK_CUR, or SEEK_END, the offset is relative to the
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* start of the file, the current position indicator, or end-of-file,
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* respectively. A successful call to the fseek() function clears the
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* end-of-file indicator for the stream and undoes any effects of the
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* ungetc(3) function on the same stream.
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*
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* Returned Value:
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* Zero on success; -1 on failure with errno set appropriately.
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*
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****************************************************************************/
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int fseek(FAR FILE *stream, long int offset, int whence)
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{
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#ifdef CONFIG_DEBUG_FEATURES
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/* Verify that we were provided with a stream */
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if (!stream)
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{
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set_errno(EBADF);
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return ERROR;
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}
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#endif
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#ifndef CONFIG_STDIO_DISABLE_BUFFERING
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/* Flush any valid read/write data in the buffer (also verifies stream) */
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if (lib_rdflush(stream) < 0 || lib_wrflush(stream) < 0)
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{
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return ERROR;
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}
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#endif
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/* On success or failure, discard any characters saved by ungetc() */
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#if CONFIG_NUNGET_CHARS > 0
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stream->fs_nungotten = 0;
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#endif
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/* Perform the fseek on the underlying file descriptor */
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return lseek(stream->fs_fd, offset, whence) == (off_t)-1 ? ERROR : OK;
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}
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