[Libguestfs] [PATCH v2 4/4] New API: btrfs_inspect_internal_logical_resolve

From: Hu Tao <hutao(a)cn.fujitsu.com&gt; Signed-off-by: Hu Tao <hutao(a)cn.fujitsu.com&gt; Signed-off-by: Chen Hanxiao <chenhanxiao(a)cn.fujitsu.com&gt; --- daemon/btrfs.c | 41 +++++++++++++++++++++++++++++++++++++++++ generator/actions.ml | 10 ++++++++++ src/MAX_PROC_NR | 2 +- 3 files changed, 52 insertions(+), 1 deletion(-) diff --git a/daemon/btrfs.c b/daemon/btrfs.c index 2c2eb57..d84c28e 100644 --- a/daemon/btrfs.c +++ b/daemon/btrfs.c @@ -2049,3 +2049,44 @@ do_btrfs_inspect_internal_inode_resolve (int64_t inode, const char *fs) return out; } + +char * +do_btrfs_inspect_internal_logical_resolve (int64_t logical, const char *fs) +{ + const size_t MAX_ARGS = 64; + const char *argv[MAX_ARGS]; + size_t i = 0; + CLEANUP_FREE char *fs_buf = NULL; + CLEANUP_FREE char *err = NULL; + char *out; + size_t len; + int r; + char logical_str[32]; + + fs_buf = sysroot_path (fs); + if (fs_buf == NULL) { + reply_with_perror ("malloc"); + return NULL; + } + + ADD_ARG (argv, i, str_btrfs); + ADD_ARG (argv, i, "inspect-internal"); + ADD_ARG (argv, i, "logical-resolve"); + snprintf (logical_str, sizeof logical_str, "%" PRIi64, logical); + ADD_ARG (argv, i, logical_str); + ADD_ARG (argv, i, fs_buf); + ADD_ARG (argv, i, NULL); + + r = commandv (&out, &err, argv); + if (r == -1) { + reply_with_error ("%s: %s", fs, err); + return NULL; + } + + /* Trim trailing '\n' */ + len = strlen (out); + if (len > 0 && out[len-1] == '\n') + out[len-1] = '\0'; + + return out; +} diff --git a/generator/actions.ml b/generator/actions.ml index 0014c7d..7b7655d 100644 --- a/generator/actions.ml +++ b/generator/actions.ml @@ -12521,6 +12521,16 @@ Get path on a btrfs filesystem for the given subvolume ID." }; longdesc = "\ Get path on a btrfs filesystem for the given inode." }; + { defaults with + name = "btrfs_inspect_internal_logical_resolve"; + style = RString "path", [Int64 "logical"; Pathname "fs"], []; + proc_nr = Some 453; + optional = Some "btrfs"; camel_name = "BTRFSInspectInternalLogicalResolve"; + test_excuse = "can't determine a valid logical address for test"; + shortdesc = "get path for the given logical address"; + longdesc = "\ +Get path on a btrfs filesystem for the logical address." }; + ] (* 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