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https://github.com/ArduPilot/ardupilot
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f6d475c1e6
By opening with O_CLOEXEC we make sure we don't leak the file descriptor when we are exec'ing or calling out subprograms. Right now we currently don't do it so there's no harm, but it's good practice in Linux to have it.
36 lines
848 B
C++
36 lines
848 B
C++
#include <AP_HAL/AP_HAL.h>
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#if CONFIG_HAL_BOARD == HAL_BOARD_SITL
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "Storage.h"
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using namespace HALSITL;
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void EEPROMStorage::_eeprom_open(void)
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{
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if (_eeprom_fd == -1) {
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_eeprom_fd = open("eeprom.bin", O_RDWR|O_CREAT|O_CLOEXEC, 0777);
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assert(ftruncate(_eeprom_fd, HAL_STORAGE_SIZE) == 0);
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}
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}
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void EEPROMStorage::read_block(void *dst, uint16_t src, size_t n)
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{
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assert(src < HAL_STORAGE_SIZE && src + n <= HAL_STORAGE_SIZE);
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_eeprom_open();
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assert(pread(_eeprom_fd, dst, n, src) == (ssize_t)n);
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}
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void EEPROMStorage::write_block(uint16_t dst, const void *src, size_t n)
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{
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assert(dst < HAL_STORAGE_SIZE);
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_eeprom_open();
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assert(pwrite(_eeprom_fd, src, n, dst) == (ssize_t)n);
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}
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#endif
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