Signed-off-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
---
smbinfo.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
smbinfo.rst | 2 ++
2 files changed, 50 insertions(+)
diff --git a/smbinfo.c b/smbinfo.c
index 4bc503a..db569b2 100644
--- a/smbinfo.c
+++ b/smbinfo.c
@@ -87,6 +87,8 @@ usage(char *name)
" Prints FileStandardInfo for a cifs file.\n"
" fsctl-getobjid:\n"
" Prints the objectid of the file and GUID of the underlying volume.\n"
+ " getcompression:\n"
+ " Prints the compression setting for the file.\n"
" list-snapshots:\n"
" List the previous versions of the volume that backs this file.\n"
" quota:\n"
@@ -243,6 +245,50 @@ fsctlgetobjid(int f)
}
static void
+print_getcompression(uint8_t *sd)
+{
+ uint16_t u16;
+
+ memcpy(&u16, &sd[0], 2);
+ u16 = le16toh(u16);
+
+ printf("Compression: ");
+ switch (u16) {
+ case 0:
+ printf("(0) NONE\n");
+ break;
+ case 2:
+ printf("(2) LZNT1\n");
+ break;
+ default:
+ printf("(%d) UNKNOWN\n", u16);
+ break;
+ }
+}
+
+static void
+getcompression(int f)
+{
+ struct smb_query_info *qi;
+
+ qi = malloc(sizeof(struct smb_query_info) + 2);
+ memset(qi, 0, sizeof(qi) + 2);
+ qi->info_type = 0x9003c;
+ qi->file_info_class = 0;
+ qi->additional_information = 0;
+ qi->input_buffer_length = 2;
+ qi->flags = PASSTHRU_FSCTL;
+
+ if (ioctl(f, CIFS_QUERY_INFO, qi) < 0) {
+ fprintf(stderr, "ioctl failed with %s\n", strerror(errno));
+ exit(1);
+ }
+ print_getcompression((uint8_t *)(&qi[1]));
+
+ free(qi);
+}
+
+static void
print_fileaccessinfo(uint8_t *sd, int type)
{
uint32_t access_flags;
@@ -1118,6 +1164,8 @@ int main(int argc, char *argv[])
filestandardinfo(f);
else if (!strcmp(argv[optind], "fsctl-getobjid"))
fsctlgetobjid(f);
+ else if (!strcmp(argv[optind], "getcompression"))
+ getcompression(f);
else if (!strcmp(argv[optind], "list-snapshots"))
list_snapshots(f);
else if (!strcmp(argv[optind], "quota"))
diff --git a/smbinfo.rst b/smbinfo.rst
index 0c96050..ca99b07 100644
--- a/smbinfo.rst
+++ b/smbinfo.rst
@@ -64,6 +64,8 @@ COMMAND
`fsctl-getobjid`: Prints the ObjectID
+`getcompression`: Prints the compression setting for the file.
+
`list-snapshots`: Lists the previous versions of the volume that backs this file
`quota`: Print the quota for the volume in the form
--
2.13.6
