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util/cutils: Return qemu_strtosz*() error and value separately

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This makes qemu_strtosz(), qemu_strtosz_mebi() and
qemu_strtosz_metric() similar to qemu_strtoi64(), except negative
values are rejected.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com> (maintainer:X86)
Cc: Kevin Wolf <kwolf@redhat.com> (supporter:Block layer core)
Cc: Max Reitz <mreitz@redhat.com> (supporter:Block layer core)
Cc: qemu-block@nongnu.org (open list:Block layer core)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1487708048-2131-23-git-send-email-armbru@redhat.com>
This commit is contained in:
Markus Armbruster
2017-02-21 21:14:06 +01:00
parent 4fcdf65ae2
commit f17fd4fdf0
10 changed files with 119 additions and 77 deletions
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10
qemu-io-cmds.c
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@@ -137,10 +137,14 @@ static char **breakline(char *input, int *count)
static int64_t cvtnum(const char *s)
{
int64_t ret;
int err;
int64_t value;
ret = qemu_strtosz(s, NULL);
return ret;
err = qemu_strtosz(s, NULL, &value);
if (err < 0) {
return err;
}
return value;
}
static void print_cvtnum_err(int64_t rc, const char *arg)