RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-01-18 12:52:44 +01:00
Code Releases Activity

vfs: Zero buffers in all stat calls

Browse Source 
This allows individual VFS implementations to populate just the fields
they can populte.
This commit is contained in:
chrysn 2022-02-12 12:23:03 +01:00
parent d97eed54a1
commit 4e84c19281
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/vfs/vfs.c
View File

@ -200,6 +200,7 @@ int vfs_fstat(int fd, struct stat *buf)
/* driver does not implement fstat() */
return -EINVAL;
}
memset(buf, 0, sizeof(*buf));
return filp->f_op->fstat(filp, buf);
}
@ -214,6 +215,7 @@ int vfs_fstatvfs(int fd, struct statvfs *buf)
return res;
}
vfs_file_t *filp = &_vfs_open_files[fd];
memset(buf, 0, sizeof(*buf));
if (filp->mp->fs->fs_op->fstatvfs == NULL) {
/* file system driver does not implement fstatvfs() */
if (filp->mp->fs->fs_op->statvfs != NULL) {
@ -753,6 +755,7 @@ int vfs_stat(const char *restrict path, struct stat *restrict buf)
atomic_fetch_sub(&mountp->open_files, 1);
return -EPERM;
}
memset(buf, 0, sizeof(*buf));
res = mountp->fs->fs_op->stat(mountp, rel_path, buf);
/* remember to decrement the open_files count */
atomic_fetch_sub(&mountp->open_files, 1);
@ -782,6 +785,7 @@ int vfs_statvfs(const char *restrict path, struct statvfs *restrict buf)
atomic_fetch_sub(&mountp->open_files, 1);
return -EPERM;
}
memset(buf, 0, sizeof(*buf));
res = mountp->fs->fs_op->statvfs(mountp, rel_path, buf);
/* remember to decrement the open_files count */
atomic_fetch_sub(&mountp->open_files, 1);
@ -1042,6 +1046,7 @@ int vfs_sysop_stat_from_fstat(vfs_mount_t *mountp, const char *restrict path, st
if (err < 0) {
return err;
}
memset(buf, 0, sizeof(*buf));
err = f_op->fstat(&opened, buf);
f_op->close(&opened);
return err;