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From 362faad8e8f4c2c2c875df12f6bbae7964c0146d Mon Sep 17 00:00:00 2001
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From: John Snow <jsnow@redhat.com>
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Date: Mon, 23 Nov 2015 17:38:38 +0100
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Subject: [PATCH 19/27] qemu-io: Check for trailing chars
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RH-Author: John Snow <jsnow@redhat.com>
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Message-id: <1448300320-7772-20-git-send-email-jsnow@redhat.com>
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Patchwork-id: 68449
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O-Subject: [RHEL-7.3 qemu-kvm PATCH v2 19/21] qemu-io: Check for trailing chars
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Bugzilla: 1272523
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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Make sure there's not trailing garbage, e.g.
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"64k-whatever-i-want-here"
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Reported-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit ef5a788527b2038d742b057a415ab4d0e735e98f)
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Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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Conflicts:
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qemu-io-cmds.c:
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- Downstream still uses strtosz_suffix, not
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qemu_strtosz_suffix.
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Signed-off-by: John Snow <jsnow@redhat.com>
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---
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qemu-io-cmds.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
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index 95345fe..6ea027d 100644
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--- a/qemu-io-cmds.c
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+++ b/qemu-io-cmds.c
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@@ -124,7 +124,14 @@ static char **breakline(char *input, int *count)
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static int64_t cvtnum(const char *s)
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{
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char *end;
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- return strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B);
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+ int64_t ret;
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+
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+ ret = strtosz_suffix(s, &end, STRTOSZ_DEFSUFFIX_B);
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+ if (*end != '\0') {
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+ /* Detritus at the end of the string */
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+ return -EINVAL;
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+ }
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+ return ret;
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}
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#define EXABYTES(x) ((long long)(x) << 60)
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--
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1.8.3.1
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