sPAPR: Introduce rtas_ldq()

[mirror_qemu.git] / qemu-io-cmds.c

diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 1afcfc01a57ca2a877b38b4ee87f144d4682d7d7..d6572a85857d6f9b79d8bfa8b89077714d195947 100644 (file)
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -13,6 +13,7 @@
 #include "block/block.h"
 #include "block/block_int.h" /* for info_f() */
 #include "block/qapi.h"
+#include "qemu/error-report.h"
 #include "qemu/main-loop.h"
 #include "qemu/timer.h"
 #include "sysemu/block-backend.h"
@@ -646,7 +647,7 @@ static int read_f(BlockBackend *blk, int argc, char **argv)
     int total = 0;
     int pattern = 0, pattern_offset = 0, pattern_count = 0;
 
-    while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != EOF) {
+    while ((c = getopt(argc, argv, "bCl:pP:qs:v")) != -1) {
         switch (c) {
         case 'b':
             bflag = 1;
@@ -830,7 +831,7 @@ static int readv_f(BlockBackend *blk, int argc, char **argv)
     int pattern = 0;
     int Pflag = 0;
 
-    while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
+    while ((c = getopt(argc, argv, "CP:qv")) != -1) {
         switch (c) {
         case 'C':
             Cflag = 1;
@@ -961,7 +962,7 @@ static int write_f(BlockBackend *blk, int argc, char **argv)
     int total = 0;
     int pattern = 0xcd;
 
-    while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) {
+    while ((c = getopt(argc, argv, "bcCpP:qz")) != -1) {
         switch (c) {
         case 'b':
             bflag = 1;
@@ -1116,7 +1117,7 @@ static int writev_f(BlockBackend *blk, int argc, char **argv)
     int pattern = 0xcd;
     QEMUIOVector qiov;
 
-    while ((c = getopt(argc, argv, "CqP:")) != EOF) {
+    while ((c = getopt(argc, argv, "CqP:")) != -1) {
         switch (c) {
         case 'C':
             Cflag = 1;
@@ -1228,7 +1229,7 @@ static int multiwrite_f(BlockBackend *blk, int argc, char **argv)
     int i;
     BlockRequest *reqs;
 
-    while ((c = getopt(argc, argv, "CqP:")) != EOF) {
+    while ((c = getopt(argc, argv, "CqP:")) != -1) {
         switch (c) {
         case 'C':
             Cflag = 1;
@@ -1463,7 +1464,7 @@ static int aio_read_f(BlockBackend *blk, int argc, char **argv)
     struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
 
     ctx->blk = blk;
-    while ((c = getopt(argc, argv, "CP:qv")) != EOF) {
+    while ((c = getopt(argc, argv, "CP:qv")) != -1) {
         switch (c) {
         case 'C':
             ctx->Cflag = 1;
@@ -1562,7 +1563,7 @@ static int aio_write_f(BlockBackend *blk, int argc, char **argv)
     struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
 
     ctx->blk = blk;
-    while ((c = getopt(argc, argv, "CqP:")) != EOF) {
+    while ((c = getopt(argc, argv, "CqP:")) != -1) {
         switch (c) {
         case 'C':
             ctx->Cflag = 1;
@@ -1779,7 +1780,7 @@ static int discard_f(BlockBackend *blk, int argc, char **argv)
     int64_t offset;
     int count;
 
-    while ((c = getopt(argc, argv, "Cq")) != EOF) {
+    while ((c = getopt(argc, argv, "Cq")) != -1) {
         switch (c) {
         case 'C':
             Cflag = 1;
@@ -1978,6 +1979,95 @@ static const cmdinfo_t map_cmd = {
        .oneline        = "prints the allocated areas of a file",
 };
 
+static void reopen_help(void)
+{
+    printf(
+"\n"
+" Changes the open options of an already opened image\n"
+"\n"
+" Example:\n"
+" 'reopen -o lazy-refcounts=on' - activates lazy refcount writeback on a qcow2 image\n"
+"\n"
+" -r, -- Reopen the image read-only\n"
+" -c, -- Change the cache mode to the given value\n"
+" -o, -- Changes block driver options (cf. 'open' command)\n"
+"\n");
+}
+
+static int reopen_f(BlockBackend *blk, int argc, char **argv);
+
+static QemuOptsList reopen_opts = {
+    .name = "reopen",
+    .merge_lists = true,
+    .head = QTAILQ_HEAD_INITIALIZER(reopen_opts.head),
+    .desc = {
+        /* no elements => accept any params */
+        { /* end of list */ }
+    },
+};
+
+static const cmdinfo_t reopen_cmd = {
+       .name           = "reopen",
+       .argmin         = 0,
+       .argmax         = -1,
+       .cfunc          = reopen_f,
+       .args           = "[-r] [-c cache] [-o options]",
+       .oneline        = "reopens an image with new options",
+       .help           = reopen_help,
+};
+
+static int reopen_f(BlockBackend *blk, int argc, char **argv)
+{
+    BlockDriverState *bs = blk_bs(blk);
+    QemuOpts *qopts;
+    QDict *opts;
+    int c;
+    int flags = bs->open_flags;
+
+    BlockReopenQueue *brq;
+    Error *local_err = NULL;
+
+    while ((c = getopt(argc, argv, "c:o:r")) != -1) {
+        switch (c) {
+        case 'c':
+            if (bdrv_parse_cache_flags(optarg, &flags) < 0) {
+                error_report("Invalid cache option: %s", optarg);
+                return 0;
+            }
+            break;
+        case 'o':
+            if (!qemu_opts_parse_noisily(&reopen_opts, optarg, 0)) {
+                qemu_opts_reset(&reopen_opts);
+                return 0;
+            }
+            break;
+        case 'r':
+            flags &= ~BDRV_O_RDWR;
+            break;
+        default:
+            qemu_opts_reset(&reopen_opts);
+            return qemuio_command_usage(&reopen_cmd);
+        }
+    }
+
+    if (optind != argc) {
+        qemu_opts_reset(&reopen_opts);
+        return qemuio_command_usage(&reopen_cmd);
+    }
+
+    qopts = qemu_opts_find(&reopen_opts, NULL);
+    opts = qopts ? qemu_opts_to_qdict(qopts, NULL) : NULL;
+    qemu_opts_reset(&reopen_opts);
+
+    brq = bdrv_reopen_queue(NULL, bs, opts, flags);
+    bdrv_reopen_multiple(brq, &local_err);
+    if (local_err) {
+        error_report_err(local_err);
+    }
+
+    return 0;
+}
+
 static int break_f(BlockBackend *blk, int argc, char **argv)
 {
     int ret;
@@ -2265,6 +2355,7 @@ static void __attribute((constructor)) init_qemuio_commands(void)
     qemuio_add_command(&discard_cmd);
     qemuio_add_command(&alloc_cmd);
     qemuio_add_command(&map_cmd);
+    qemuio_add_command(&reopen_cmd);
     qemuio_add_command(&break_cmd);
     qemuio_add_command(&remove_break_cmd);
     qemuio_add_command(&resume_cmd);