diff options
Diffstat (limited to 'qemu-io.c')
| -rw-r--r-- | qemu-io.c | 87 |
1 files changed, 85 insertions, 2 deletions
@@ -265,6 +265,18 @@ static int do_co_write_zeroes(int64_t offset, int count, int *total) } } +static int do_write_compressed(char *buf, int64_t offset, int count, int *total) +{ + int ret; + + ret = bdrv_write_compressed(bs, offset >> 9, (uint8_t *)buf, count >> 9); + if (ret < 0) { + return ret; + } + *total = count; + return 1; +} + static int do_load_vmstate(char *buf, int64_t offset, int count, int *total) { *total = bdrv_load_vmstate(bs, (uint8_t *)buf, offset, count); @@ -687,6 +699,7 @@ static void write_help(void) " Writes into a segment of the currently open file, using a buffer\n" " filled with a set pattern (0xcdcdcdcd).\n" " -b, -- write to the VM state rather than the virtual disk\n" +" -c, -- write compressed data with bdrv_write_compressed\n" " -p, -- use bdrv_pwrite to write the file\n" " -P, -- use different pattern to fill file\n" " -C, -- report statistics in a machine parsable format\n" @@ -703,7 +716,7 @@ static const cmdinfo_t write_cmd = { .cfunc = write_f, .argmin = 2, .argmax = -1, - .args = "[-bCpqz] [-P pattern ] off len", + .args = "[-bcCpqz] [-P pattern ] off len", .oneline = "writes a number of bytes at a specified offset", .help = write_help, }; @@ -712,6 +725,7 @@ static int write_f(int argc, char **argv) { struct timeval t1, t2; int Cflag = 0, pflag = 0, qflag = 0, bflag = 0, Pflag = 0, zflag = 0; + int cflag = 0; int c, cnt; char *buf = NULL; int64_t offset; @@ -720,11 +734,14 @@ static int write_f(int argc, char **argv) int total = 0; int pattern = 0xcd; - while ((c = getopt(argc, argv, "bCpP:qz")) != EOF) { + while ((c = getopt(argc, argv, "bcCpP:qz")) != EOF) { switch (c) { case 'b': bflag = 1; break; + case 'c': + cflag = 1; + break; case 'C': Cflag = 1; break; @@ -801,6 +818,8 @@ static int write_f(int argc, char **argv) cnt = do_save_vmstate(buf, offset, count, &total); } else if (zflag) { cnt = do_co_write_zeroes(offset, count, &total); + } else if (cflag) { + cnt = do_write_compressed(buf, offset, count, &total); } else { cnt = do_write(buf, offset, count, &total); } @@ -1652,6 +1671,67 @@ static const cmdinfo_t map_cmd = { .oneline = "prints the allocated areas of a file", }; +static int break_f(int argc, char **argv) +{ + int ret; + + ret = bdrv_debug_breakpoint(bs, argv[1], argv[2]); + if (ret < 0) { + printf("Could not set breakpoint: %s\n", strerror(-ret)); + } + + return 0; +} + +static const cmdinfo_t break_cmd = { + .name = "break", + .argmin = 2, + .argmax = 2, + .cfunc = break_f, + .args = "event tag", + .oneline = "sets a breakpoint on event and tags the stopped " + "request as tag", +}; + +static int resume_f(int argc, char **argv) +{ + int ret; + + ret = bdrv_debug_resume(bs, argv[1]); + if (ret < 0) { + printf("Could not resume request: %s\n", strerror(-ret)); + } + + return 0; +} + +static const cmdinfo_t resume_cmd = { + .name = "resume", + .argmin = 1, + .argmax = 1, + .cfunc = resume_f, + .args = "tag", + .oneline = "resumes the request tagged as tag", +}; + +static int wait_break_f(int argc, char **argv) +{ + while (!bdrv_debug_is_suspended(bs, argv[1])) { + qemu_aio_wait(); + } + + return 0; +} + +static const cmdinfo_t wait_break_cmd = { + .name = "wait_break", + .argmin = 1, + .argmax = 1, + .cfunc = wait_break_f, + .args = "tag", + .oneline = "waits for the suspension of a request", +}; + static int abort_f(int argc, char **argv) { abort(); @@ -1915,6 +1995,9 @@ int main(int argc, char **argv) add_command(&discard_cmd); add_command(&alloc_cmd); add_command(&map_cmd); + add_command(&break_cmd); + add_command(&resume_cmd); + add_command(&wait_break_cmd); add_command(&abort_cmd); add_args_command(init_args_command); |