| Updated: October 28, 2024 |
Get the compresssion setting for a flash filesystem
#include <sys/dcmd_f3s.h> #define DCMD_F3S_GETCMP __DIOTF(_DCMD_F3S, F3S_GETCMP, f3s_cmdcmp_t)
| Argument | Value |
|---|---|
| filedes | A file descriptor that you obtained by opening the device. |
| dcmd | DCMD_F3S_GETCMP |
| dev_data_ptr | A pointer to a f3s_cmdcmp_t structure (see below) |
| n_bytes | sizeof(f3s_cmdcmp_t) |
| dev_info_ptr | NULL |
This command gets the compression setting for a flash filesystem.
A f3s_cmdcmp_t structure:
typedef struct f3s_cmdcmp_s
{
uint32_t status; /* cmdcmp status */
uint32_t cmp_flag; /* compression flag */
}
f3s_cmdcmp_t;
If cmd_flag is nonzero, the filesystem is compressed.