The file module has functions lock files across several operations that are almost exact equivalents to POSIX API functions (see and Listing - File Module Function and Listing - POSIX API Equivalent); the primary difference is the advantage of valuable return error codes to the application.
| Code Block | ||||||
|---|---|---|---|---|---|---|
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void FSFile_LockGet (FS_FILE *p_file,
FS_ERR *p_err);
void FSFile_LockAccept (FS_FILE *p_file,
FS_ERR *p_err);
void FSFile_LockSet (FS_FILE *p_file,
FS_ERR *p_err); |
| Code Block | ||||||
|---|---|---|---|---|---|---|
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void fs_flockfile (FS_FILE *file);
int fs_ftrylockfile (FS_FILE *file);
void fs_funlockfile (FS_FILE *file); |
For more information about and an example of using file locking, see Atomic File Operations Using File Lock - POSIX.