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File _service:tar_scm:migration-Add-compress_level-sanity-check.patch of Package qemu
From 79863c5ccdd4c635657d2e32e91bc02aa49655e0 Mon Sep 17 00:00:00 2001 From: Chuan Zheng <zhengchuan@huawei.com> Date: Sat, 30 Jan 2021 16:23:15 +0800 Subject: [PATCH] migration: Add compress_level sanity check Zlib compression has level from 1 to 9. However Zstd compression has level from 1 to 22 (level >= 20 not recommanded). Let's do sanity check here to make sure a vaild compress_level is given by user. Signed-off-by: Chuan Zheng <zhengchuan@huawei.com> Signed-off-by: Zeyu Jin <jinzeyu@huawei.com> Signed-off-by: Ying Fang <fangying1@huawei.com> --- migration/options.c | 32 ++++++++++++++++++++++++++++---- 1 file changed, 28 insertions(+), 4 deletions(-) diff --git a/migration/options.c b/migration/options.c index 6aaee702dc..9b68962a65 100644 --- a/migration/options.c +++ b/migration/options.c @@ -1065,16 +1065,40 @@ void migrate_params_init(MigrationParameters *params) params->has_mode = true; } +static bool compress_level_check(MigrationParameters *params, Error **errp) +{ + switch (params->compress_method) { + case COMPRESS_METHOD_ZLIB: + if (params->compress_level > 9 || params->compress_level < 1) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "compress_level", + "a value in the range of 0 to 9 for Zlib method"); + return false; + } + break; +#ifdef CONFIG_ZSTD + case COMPRESS_METHOD_ZSTD: + if (params->compress_level > 19 || params->compress_level < 1) { + error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "compress_level", + "a value in the range of 1 to 19 for Zstd method"); + return false; + } + break; +#endif + default: + error_setg(errp, "Checking compress_level failed for unknown reason"); + return false; + } + + return true; +} + /* * Check whether the parameters are valid. Error will be put into errp * (if provided). Return true if valid, otherwise false. */ bool migrate_params_check(MigrationParameters *params, Error **errp) { - if (params->has_compress_level && - (params->compress_level > 9)) { - error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "compress_level", - "a value between 0 and 9"); + if (params->has_compress_level && !compress_level_check(params, errp)) { return false; } -- 2.27.0
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