1:45 a.m.
This patch will add support for getting partition type
of a partiton numbered device.
Signed-off-by: Chen Hanxiao <chenhanxiao(a)cn.fujitsu.com>
---
daemon/parted.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++
generator/actions.ml | 18 +++++++++
src/MAX_PROC_NR | 2 +-
3 files changed, 131 insertions(+), 1 deletion(-)
diff --git a/daemon/parted.c b/daemon/parted.c
index a7bcb99..0ae6e5c 100644
--- a/daemon/parted.c
+++ b/daemon/parted.c
@@ -33,6 +33,10 @@ GUESTFSD_EXT_CMD(str_parted, parted);
GUESTFSD_EXT_CMD(str_sfdisk, sfdisk);
GUESTFSD_EXT_CMD(str_sgdisk, sgdisk);
+#ifndef PARTED_NO_M
+# define PARTED_NO_M 0
+#endif
+
/* Notes:
*
* Parted 1.9 sends error messages to stdout, hence use of the
@@ -1022,3 +1026,111 @@ do_part_get_name (const char *device, int partnum)
reply_with_error ("cannot get the partition name from '%s' layouts",
parttype);
return NULL;
}
+
+char *
+do_part_get_part_type (const char *device, int partnum)
+{
+ CLEANUP_FREE char *parttype;
+ char *part_type;
+
+ if (partnum <= 0) {
+ reply_with_error ("partition number must be >= 1");
+ return NULL;
+ }
+
+ parttype = do_part_get_parttype (device);
+ if (parttype == NULL)
+ return NULL;
+
+ if (STREQ (parttype, "gpt")) {
+ part_type = strdup("primary");
+ if (part_type == NULL) {
+ reply_with_error ("strdup failed");
+ return NULL;
+ }
+ return part_type;
+ }
+
+ /* machine parseable output by 'parted -m' did not provide
+ * partition type info.
+ * Use traditional style.
+ */
+ CLEANUP_FREE char *out = print_partition_table (device, PARTED_NO_M);
+ if (!out)
+ return NULL;
+
+ CLEANUP_FREE_STRING_LIST char **lines = split_lines (out);
+
+ if (!lines)
+ return NULL;
+
+ size_t start = 0, end = 0, row;
+
+ for (row = 0; lines[row] != NULL; ++row)
+ if (STRPREFIX (lines[row], "Number")) {
+ start = row + 1;
+ break;
+ }
+
+ if (start == 0) {
+ reply_with_error ("parted output has no \"Number\" line");
+ return NULL;
+ }
+
+ for (row = start; lines[row] != NULL; ++row)
+ if (STREQ (lines[row], "")) {
+ end = row;
+ break;
+ }
+
+ if (end == 0) {
+ reply_with_error ("parted output has no blank after end of table");
+ return NULL;
+ }
+
+ /* Now parse the lines. */
+ size_t i;
+ int64_t temp_int64;
+ int part_num;
+ char temp_type[16];
+ for (i = 0, row = start; row < end; ++i, ++row) {
+ if (sscanf (lines[row], "%d%" SCNi64 "B%" SCNi64 "B%"
SCNi64 "B" "%s",
+ &part_num,
+ &temp_int64,
+ &temp_int64,
+ &temp_int64,
+ temp_type) != 5) {
+ reply_with_error ("could not parse row from output of parted print command:
%s", lines[row]);
+ return NULL;
+ }
+
+ if (part_num != partnum)
+ continue;
+
+ if (STRPREFIX (temp_type, "primary")) {
+ part_type = strdup("primary");
+ if (part_type == NULL)
+ goto error;
+ } else if (STRPREFIX (temp_type, "logical")) {
+ part_type = strdup("logical");
+ if (part_type == NULL)
+ goto error;
+ } else if (STRPREFIX (temp_type, "extended")) {
+ part_type = strdup("extended");
+ if (part_type == NULL)
+ goto error;
+ } else
+ goto error;
+
+ return part_type;
+ }
+
+ if (row == end) {
+ reply_with_error ("could not find partnum: %d", partnum);
+ return NULL;
+ }
+
+ error:
+ reply_with_error ("strdup failed");
+ return NULL;
+}
diff --git a/generator/actions.ml b/generator/actions.ml
index fb971d3..72418b0 100644
--- a/generator/actions.ml
+++ b/generator/actions.ml
@@ -12522,6 +12522,24 @@ This will Enable extended inode refs." };
longdesc = "\
This enable skinny metadata extent refs." };
+ { defaults with
+ name = "part_get_part_type";
+ style = RString "partitiontype", [Device "device"; Int
"partnum"], [];
+ proc_nr = Some 453;
+ tests = [
+ InitEmpty, Always, TestResultString (
+ [["part_init"; "/dev/sda"; "mbr"];
+ ["part_add"; "/dev/sda"; "p"; "64";
"204799"];
+ ["part_add"; "/dev/sda"; "e"; "204800";
"614400"];
+ ["part_add"; "/dev/sda"; "l"; "204864";
"205988"];
+ ["part_get_part_type"; "/dev/sda"; "5"]],
"logical"), []
+ ];
+
+ shortdesc = "get the partition type";
+ longdesc = "\
+This could get the partition type, such as primary, logical,
+on partition numbered C<partnum> on device C<device>." };
+
]
(* Non-API meta-commands available only in guestfish.
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index 8670c73..534b992 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-452
+453
--
2.1.0