101 lines
2.5 KiB
Diff
101 lines
2.5 KiB
Diff
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From 1e4fca25948d52fc29410963663f3af72275bcb6 Mon Sep 17 00:00:00 2001
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From: Ronnie Sahlberg <lsahlber@redhat.com>
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Date: Thu, 11 Apr 2019 12:23:06 +1000
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Subject: [PATCH] smbinfo: add GETCOMPRESSION support
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Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
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---
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smbinfo.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
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smbinfo.rst | 2 ++
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2 files changed, 50 insertions(+)
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diff --git a/smbinfo.c b/smbinfo.c
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index 6e258c2..b4d497b 100644
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--- a/smbinfo.c
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+++ b/smbinfo.c
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@@ -89,6 +89,8 @@ usage(char *name)
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" Prints FileStandardInfo for a cifs file.\n"
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" fsctl-getobjid:\n"
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" Prints the objectid of the file and GUID of the underlying volume.\n"
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+ " getcompression:\n"
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+ " Prints the compression setting for the file.\n"
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" list-snapshots:\n"
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" List the previous versions of the volume that backs this file.\n"
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" quota:\n"
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@@ -252,6 +254,50 @@ fsctlgetobjid(int f)
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free(qi);
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}
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+static void
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+print_getcompression(uint8_t *sd)
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+{
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+ uint16_t u16;
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+
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+ memcpy(&u16, &sd[0], 2);
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+ u16 = le16toh(u16);
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+
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+ printf("Compression: ");
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+ switch (u16) {
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+ case 0:
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+ printf("(0) NONE\n");
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+ break;
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+ case 2:
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+ printf("(2) LZNT1\n");
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+ break;
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+ default:
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+ printf("(%d) UNKNOWN\n", u16);
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+ break;
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+ }
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+}
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+
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+static void
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+getcompression(int f)
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+{
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+ struct smb_query_info *qi;
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+
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+ qi = malloc(sizeof(struct smb_query_info) + 2);
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+ memset(qi, 0, sizeof(qi) + 2);
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+ qi->info_type = 0x9003c;
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+ qi->file_info_class = 0;
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+ qi->additional_information = 0;
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+ qi->input_buffer_length = 2;
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+ qi->flags = PASSTHRU_FSCTL;
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+
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+ if (ioctl(f, CIFS_QUERY_INFO, qi) < 0) {
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+ fprintf(stderr, "ioctl failed with %s\n", strerror(errno));
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+ exit(1);
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+ }
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+ print_getcompression((uint8_t *)(&qi[1]));
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+
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+ free(qi);
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+}
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+
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static void
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print_fileaccessinfo(uint8_t *sd, int type)
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{
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@@ -1135,6 +1181,8 @@ int main(int argc, char *argv[])
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filestandardinfo(f);
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else if (!strcmp(argv[optind], "fsctl-getobjid"))
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fsctlgetobjid(f);
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+ else if (!strcmp(argv[optind], "getcompression"))
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+ getcompression(f);
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else if (!strcmp(argv[optind], "list-snapshots"))
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list_snapshots(f);
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else if (!strcmp(argv[optind], "quota"))
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diff --git a/smbinfo.rst b/smbinfo.rst
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index be4c829..500ce0e 100644
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--- a/smbinfo.rst
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+++ b/smbinfo.rst
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@@ -67,6 +67,8 @@ COMMAND
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`fsctl-getobjid`: Prints the ObjectID
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+`getcompression`: Prints the compression setting for the file.
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+
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`list-snapshots`: Lists the previous versions of the volume that backs this file
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`quota`: Print the quota for the volume in the form
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--
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2.16.4
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