Decode mtd/ubi ioctls
Been playing with UBI of late and it'd help if I could see what it was
doing. Not entirely sure about the decoding of UBI_IOCVOLUP -- it takes
a pointer to a 64bit value, not a strict.
* util.c (MAX, MIN): Move to ...
* defs.h (MAX, MIN): ... here.
(CLAMP): Define.
(ubi_ioctl): New prototype.
* ioctl.c (ioctl_decode): Call ubi_ioctl when code is 'o' or 'O'.
* mtd.c: Include ubi user API header.
(ubi_volume_types): New enum decode.
(ubi_volume_props): Likewise.
(ubi_ioctl): Define.
* linux/ubi-user.h: Import from linux 3.8.
diff --git a/mtd.c b/mtd.c
index 999fea6..9a16ad7 100644
--- a/mtd.c
+++ b/mtd.c
@@ -35,6 +35,11 @@
#else
# include <mtd/mtd-abi.h>
#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
+# include "ubi-user.h"
+#else
+# include <mtd/ubi-user.h>
+#endif
static const struct xlat mtd_mode_options[] = {
{ MTD_OPS_PLACE_OOB, "MTD_OPS_PLACE_OOB" },
@@ -280,3 +285,122 @@
return 0;
}
}
+
+static const struct xlat ubi_volume_types[] = {
+ { UBI_DYNAMIC_VOLUME, "UBI_DYNAMIC_VOLUME" },
+ { UBI_STATIC_VOLUME, "UBI_STATIC_VOLUME" },
+ { 0, NULL },
+};
+
+static const struct xlat ubi_volume_props[] = {
+ { UBI_VOL_PROP_DIRECT_WRITE, "UBI_VOL_PROP_DIRECT_WRITE" },
+ { 0, NULL },
+};
+
+int ubi_ioctl(struct tcb *tcp, long code, long arg)
+{
+ struct ubi_mkvol_req mkvol;
+ struct ubi_rsvol_req rsvol;
+ struct ubi_rnvol_req rnvol;
+ struct ubi_attach_req attach;
+ struct ubi_map_req map;
+ struct ubi_set_vol_prop_req prop;
+ /* 4*(n-1) + 3 for quotes and NUL */
+ char vol_name[(UBI_MAX_VOLUME_NAME + 1) * 4];
+
+ if (entering(tcp))
+ return 0;
+
+ switch (code) {
+ case UBI_IOCMKVOL:
+ if (!verbose(tcp) || umove(tcp, arg, &mkvol) < 0)
+ return 0;
+
+ tprintf(", {vol_id=%" PRIi32 ", alignment=%" PRIi32
+ ", bytes=%" PRIi64 ", vol_type=", mkvol.vol_id,
+ mkvol.alignment, (int64_t)mkvol.bytes);
+ printxval(ubi_volume_types, mkvol.vol_type, "UBI_???_VOLUME");
+ string_quote(mkvol.name, vol_name, -1, mkvol.name_len);
+ tprintf(", name_len=%" PRIi16 ", name=%s",
+ mkvol.name_len, vol_name);
+ tprints("}");
+ return 1;
+
+ case UBI_IOCRSVOL:
+ if (!verbose(tcp) || umove(tcp, arg, &rsvol) < 0)
+ return 0;
+
+ tprintf(", {vol_id=%" PRIi32 ", bytes=%" PRIi64 "}",
+ rsvol.vol_id, (int64_t)rsvol.bytes);
+ return 1;
+
+ case UBI_IOCRNVOL: {
+ __s32 c;
+
+ if (!verbose(tcp) || umove(tcp, arg, &rnvol) < 0)
+ return 0;
+
+ tprintf(", {count=%" PRIi32 ", ents=[", rnvol.count);
+ for (c = 0; c < CLAMP(rnvol.count, 0, UBI_MAX_RNVOL); ++c) {
+ if (c)
+ tprints(", ");
+ string_quote(rnvol.ents[c].name, vol_name, -1,
+ rnvol.ents[c].name_len);
+ tprintf("{vol_id=%" PRIi32 ", name_len=%" PRIi16
+ ", name=%s}", rnvol.ents[c].vol_id,
+ rnvol.ents[c].name_len, vol_name);
+ }
+ tprints("]}");
+ return 1;
+ }
+
+ case UBI_IOCVOLUP: {
+ __s64 bytes;
+
+ if (!verbose(tcp) || umove(tcp, arg, &bytes) < 0)
+ return 0;
+
+ tprintf(", %" PRIi64, (int64_t)bytes);
+ return 1;
+ }
+
+ case UBI_IOCATT:
+ if (!verbose(tcp) || umove(tcp, arg, &attach) < 0)
+ return 0;
+
+ tprintf(", {ubi_num=%" PRIi32 ", mtd_num=%" PRIi32
+ ", vid_hdr_offset=%" PRIi32
+ ", max_beb_per1024=%" PRIi16 "}",
+ attach.ubi_num, attach.mtd_num,
+ attach.vid_hdr_offset, attach.max_beb_per1024);
+ return 1;
+
+ case UBI_IOCEBMAP:
+ if (!verbose(tcp) || umove(tcp, arg, &map) < 0)
+ return 0;
+
+ tprintf(", {lnum=%" PRIi32 ", dtype=%" PRIi8 "}",
+ map.lnum, map.dtype);
+ return 1;
+
+ case UBI_IOCSETVOLPROP:
+ if (!verbose(tcp) || umove(tcp, arg, &prop) < 0)
+ return 0;
+
+ tprints(", {property=");
+ printxval(ubi_volume_props, prop.property, "UBI_VOL_PROP_???");
+ tprintf(", value=%#" PRIx64 "}", (uint64_t)prop.value);
+ return 1;
+
+ case UBI_IOCRMVOL:
+ case UBI_IOCDET:
+ case UBI_IOCEBER:
+ case UBI_IOCEBCH:
+ case UBI_IOCEBUNMAP:
+ case UBI_IOCEBISMAP:
+ /* These ones take simple args, so let default printer handle it */
+
+ default:
+ return 0;
+ }
+}