Signed-off-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
---
smbinfo.c | 28 ++++++++++++++++++++++++++++
smbinfo.rst | 5 +++++
2 files changed, 33 insertions(+)
diff --git a/smbinfo.c b/smbinfo.c
index db569b2..b87cca4 100644
--- a/smbinfo.c
+++ b/smbinfo.c
@@ -89,6 +89,8 @@ usage(char *name)
" Prints the objectid of the file and GUID of the underlying volume.\n"
" getcompression:\n"
" Prints the compression setting for the file.\n"
+ " setcompression <0|1|2>:\n"
+ " Sets the compression level for the file.\n"
" list-snapshots:\n"
" List the previous versions of the volume that backs this file.\n"
" quota:\n"
@@ -289,6 +291,30 @@ getcompression(int f)
}
static void
+setcompression(int f, uint16_t level)
+{
+ struct smb_query_info *qi;
+
+ qi = malloc(sizeof(struct smb_query_info) + 2);
+ memset(qi, 0, sizeof(qi) + 2);
+ qi->info_type = 0x9c040;
+ qi->file_info_class = 0;
+ qi->additional_information = 0;
+ qi->output_buffer_length = 2;
+ qi->flags = PASSTHRU_FSCTL;
+
+ level = htole16(level);
+ memcpy(&qi[1], &level, 2);
+
+ if (ioctl(f, CIFS_QUERY_INFO, qi) < 0) {
+ fprintf(stderr, "ioctl failed with %s\n", strerror(errno));
+ exit(1);
+ }
+
+ free(qi);
+}
+
+static void
print_fileaccessinfo(uint8_t *sd, int type)
{
uint32_t access_flags;
@@ -1166,6 +1192,8 @@ int main(int argc, char *argv[])
fsctlgetobjid(f);
else if (!strcmp(argv[optind], "getcompression"))
getcompression(f);
+ else if (!strcmp(argv[optind], "setcompression"))
+ setcompression(f, strtol(argv[optind + 2], NULL, 10));
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 ca99b07..af97b7f 100644
--- a/smbinfo.rst
+++ b/smbinfo.rst
@@ -66,6 +66,11 @@ COMMAND
`getcompression`: Prints the compression setting for the file.
+`setcompression <0|1|2>`: Sets the compression setting for the file.
+- 0 No compression
+- 1 Default compression
+- 2 LZNT1
+
`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
