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openharmony_kernel_liteos_m
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Add already opened file logic

This commit is contained in:
li_zan 2021-05-07 15:25:42 +08:00
parent cd292f8428
commit 94c0727e1d
1 changed files with 9 additions and 3 deletions
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12
components/fs/littlefs/lfs_api.c
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@ -46,16 +46,22 @@ FileOpInfo GetFsOpInfo(void)
return g_fsOp; return g_fsOp;
} }
LittleFsHandleStruct *GetFreeFd(int *fd) LittleFsHandleStruct *GetFreeFd(const char *fileName, int *fd)
{ {
int len = strlen() + 1;
pthread_mutex_lock(&g_FslocalMutex); pthread_mutex_lock(&g_FslocalMutex);
for (int i = 0; i < LITTLE_FS_MAX_OPEN_FILES; i++) { for (int i = 0; i < LITTLE_FS_MAX_OPEN_FILES; i++) {
if (g_handle[i].useFlag == 0) { if (g_handle[i].useFlag == 0) {
*fd = i; *fd = i;
g_handle[i].useFlag = 1; g_handle[i].useFlag = 1;
g_handle[i].pathName = (char *)malloc(len);
if (g_handle[i].pathName) {
memcpy_s(g_handle[i].pathName, len, fileName, len);
}
pthread_mutex_unlock(&g_FslocalMutex); pthread_mutex_unlock(&g_FslocalMutex);
return &(g_handle[i]); return &(g_handle[i]);
} }
} }
pthread_mutex_unlock(&g_FslocalMutex); pthread_mutex_unlock(&g_FslocalMutex);
*fd = INVALID_FD; *fd = INVALID_FD;
@ -228,7 +234,7 @@ int LfsOpen(const char *pathName, int openFlag, int mode)
return fd; return fd;
} }
LittleFsHandleStruct *fsHandle = GetFreeFd(&fd); LittleFsHandleStruct *fsHandle = GetFreeFd(pathName, &fd);
if (fd == INVALID_FD) { if (fd == INVALID_FD) {
goto errout; goto errout;
} }