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fs/ioctl:add FIOC_XIPBASE to get file xip address

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in tmpfs/romfs, we can get file real xip address to execute program

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao 2024-04-24 12:07:48 +08:00 committed by Xiang Xiao
parent 1ec3623b6b
commit ee07a269af
3 changed files with 25 additions and 0 deletions
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15
fs/romfs/fs_romfs.c
View file

@ -605,6 +605,21 @@ static int romfs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
strlcat(ptr, rf->rf_path, PATH_MAX);
return OK;
}
else if (cmd == FIOC_XIPBASE)
{
FAR struct romfs_mountpt_s *rm = filep->f_inode->i_private;
FAR uintptr_t *ptr = (FAR uintptr_t *)arg;
if (rm->rm_xipbase != 0)
{
*ptr = (uintptr_t)rm->rm_xipbase + rf->rf_startoffset;
return OK;
}
else
{
return -ENXIO;
}
}
return -ENOTTY;
}

7
fs/tmpfs/fs_tmpfs.c
View file

@ -1825,6 +1825,13 @@ static int tmpfs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
return ret;
}
}
else if (cmd == FIOC_XIPBASE)
{
FAR uintptr_t *ptr = (FAR uintptr_t *)arg;
*ptr = (uintptr_t)tfo->tfo_data;
return OK;
}
return ret;
}

3
include/nuttx/fs/ioctl.h
View file

@ -226,6 +226,9 @@
#define FIOC_SETLKW _FIOC(0x0014) /* IN: Pointer to flock
* OUT: None
*/
#define FIOC_XIPBASE _FIOC(0x0015) /* IN: uinptr_t *
* OUT: Current file xip base address
*/
/* NuttX file system ioctl definitions **************************************/