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329 lines
6.2 KiB
C
329 lines
6.2 KiB
C
/******************************************************************************
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* ventoy_util_linux.c ---- ventoy util
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* Copyright (c) 2021, longpanda <admin@ventoy.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <time.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <linux/fs.h>
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#include <dirent.h>
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#include <time.h>
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#include <semaphore.h>
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#include <ventoy_define.h>
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#include <ventoy_util.h>
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void ventoy_gen_preudo_uuid(void *uuid)
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{
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int i;
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int fd;
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fd = open("/dev/urandom", O_RDONLY | O_BINARY);
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if (fd < 0)
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{
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srand(time(NULL));
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for (i = 0; i < 8; i++)
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{
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*((uint16_t *)uuid + i) = (uint16_t)(rand() & 0xFFFF);
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}
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}
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else
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{
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read(fd, uuid, 16);
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close(fd);
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}
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}
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int ventoy_get_sys_file_line(char *buffer, int buflen, const char *fmt, ...)
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{
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int len;
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char c;
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char path[256];
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va_list arg;
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va_start(arg, fmt);
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vsnprintf(path, 256, fmt, arg);
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va_end(arg);
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if (access(path, F_OK) >= 0)
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{
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FILE *fp = fopen(path, "r");
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memset(buffer, 0, buflen);
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len = (int)fread(buffer, 1, buflen - 1, fp);
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fclose(fp);
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while (len > 0)
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{
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c = buffer[len - 1];
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if (c == '\r' || c == '\n' || c == ' ' || c == '\t')
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{
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buffer[len - 1] = 0;
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len--;
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}
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else
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{
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break;
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}
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}
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return 0;
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}
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else
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{
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vdebug("%s not exist \n", path);
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return 1;
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}
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}
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int ventoy_is_disk_mounted(const char *devpath)
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{
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int len;
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int mount = 0;
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char line[512];
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FILE *fp = NULL;
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fp = fopen("/proc/mounts", "r");
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if (!fp)
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{
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return 0;
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}
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len = (int)strlen(devpath);
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while (fgets(line, sizeof(line), fp))
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{
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if (strncmp(line, devpath, len) == 0)
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{
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mount = 1;
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vdebug("%s mounted <%s>\n", devpath, line);
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goto end;
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}
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}
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end:
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fclose(fp);
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return mount;
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}
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const char * ventoy_get_os_language(void)
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{
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const char *env = getenv("LANG");
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if (env && strncasecmp(env, "zh_CN", 5) == 0)
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{
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return "cn";
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}
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else
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{
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return "en";
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}
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}
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int ventoy_is_file_exist(const char *fmt, ...)
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{
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va_list ap;
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struct stat sb;
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char fullpath[MAX_PATH];
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va_start (ap, fmt);
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vsnprintf(fullpath, MAX_PATH, fmt, ap);
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va_end (ap);
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if (stat(fullpath, &sb))
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{
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return 0;
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}
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if (S_ISREG(sb.st_mode))
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{
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return 1;
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}
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return 0;
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}
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int ventoy_is_directory_exist(const char *fmt, ...)
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{
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va_list ap;
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struct stat sb;
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char fullpath[MAX_PATH];
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va_start (ap, fmt);
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vsnprintf(fullpath, MAX_PATH, fmt, ap);
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va_end (ap);
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if (stat(fullpath, &sb))
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{
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return 0;
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}
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if (S_ISDIR(sb.st_mode))
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{
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return 1;
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}
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return 0;
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}
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int ventoy_get_file_size(const char *file)
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{
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int Size = -1;
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struct stat stStat;
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if (stat(file, &stStat) >= 0)
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{
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Size = (int)(stStat.st_size);
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}
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return Size;
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}
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int ventoy_write_buf_to_file(const char *FileName, void *Bufer, int BufLen)
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{
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int fd;
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int rc;
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ssize_t size;
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fd = open(FileName, O_CREAT | O_RDWR | O_TRUNC, 0755);
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if (fd < 0)
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{
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vlog("Failed to open file %s %d\n", FileName, errno);
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return 1;
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}
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rc = fchmod(fd, 0755);
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if (rc)
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{
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vlog("Failed to chmod <%s> %d\n", FileName, errno);
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}
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size = write(fd, Bufer, BufLen);
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if ((int)size != BufLen)
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{
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close(fd);
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vlog("write file %s failed %d err:%d\n", FileName, (int)size, errno);
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return 1;
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}
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fsync(fd);
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close(fd);
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return 0;
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}
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static sem_t g_writeback_sem;
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static volatile int g_thread_stop = 0;
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static pthread_t g_writeback_thread;
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static void * ventoy_local_thread_run(void* data)
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{
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ventoy_http_writeback_pf callback = (ventoy_http_writeback_pf)data;
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while (0 == g_thread_stop)
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{
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sem_wait(&g_writeback_sem);
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callback();
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}
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return NULL;
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}
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void ventoy_set_writeback_event(void)
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{
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sem_post(&g_writeback_sem);
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}
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int ventoy_start_writeback_thread(ventoy_http_writeback_pf callback)
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{
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g_thread_stop = 0;
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sem_init(&g_writeback_sem, 0, 0);
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pthread_create(&g_writeback_thread, NULL, ventoy_local_thread_run, callback);
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return 0;
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}
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void ventoy_stop_writeback_thread(void)
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{
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g_thread_stop = 1;
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sem_post(&g_writeback_sem);
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pthread_join(g_writeback_thread, NULL);
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sem_destroy(&g_writeback_sem);
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}
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int ventoy_read_file_to_buf(const char *FileName, int ExtLen, void **Bufer, int *BufLen)
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{
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int FileSize;
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FILE *fp = NULL;
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void *Data = NULL;
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fp = fopen(FileName, "rb");
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if (fp == NULL)
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{
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vlog("Failed to open file %s", FileName);
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return 1;
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}
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fseek(fp, 0, SEEK_END);
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FileSize = (int)ftell(fp);
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Data = malloc(FileSize + ExtLen);
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if (!Data)
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{
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fclose(fp);
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return 1;
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}
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fseek(fp, 0, SEEK_SET);
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fread(Data, 1, FileSize, fp);
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fclose(fp);
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*Bufer = Data;
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*BufLen = FileSize;
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return 0;
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}
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int ventoy_copy_file(const char *a, const char *b)
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{
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int len = 0;
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char *buf = NULL;
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if (0 == ventoy_read_file_to_buf(a, 0, (void **)&buf, &len))
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{
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ventoy_write_buf_to_file(b, buf, len);
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free(buf);
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}
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return 0;
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}
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