From: Thomas Huth Date: Tue, 22 Oct 2024 06:34:02 +0000 (+0200) Subject: migration/dirtyrate: Silence warning about strcpy() on OpenBSD X-Git-Tag: pull-vmclock-20250108~92^2~8 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=88c3b57f48db781c9fd0b117622f331d0f6fec92;p=users%2Fdwmw2%2Fqemu.git migration/dirtyrate: Silence warning about strcpy() on OpenBSD The linker on OpenBSD complains: ld: warning: dirtyrate.c:447 (../src/migration/dirtyrate.c:447)(...): warning: strcpy() is almost always misused, please use strlcpy() It's currently not a real problem in this case since both arrays have the same size (256 bytes). But just in case somebody changes the size of the source array in the future, let's better play safe and use g_strlcpy() here instead, with an additional check that the string has been copied as a whole. Signed-off-by: Thomas Huth Reviewed-by: Hyman Huang Link: https://lore.kernel.org/r/20241022063402.184213-1-thuth@redhat.com [peterx: Fix over-80 chars] Signed-off-by: Peter Xu --- diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index a74a6aeb56..f7e86686fc 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -437,6 +437,7 @@ static void get_ramblock_dirty_info(RAMBlock *block, struct DirtyRateConfig *config) { uint64_t sample_pages_per_gigabytes = config->sample_pages_per_gigabytes; + gsize len; /* Right shift 30 bits to calc ramblock size in GB */ info->sample_pages_count = (qemu_ram_get_used_length(block) * @@ -445,7 +446,9 @@ static void get_ramblock_dirty_info(RAMBlock *block, info->ramblock_pages = qemu_ram_get_used_length(block) >> qemu_target_page_bits(); info->ramblock_addr = qemu_ram_get_host_addr(block); - strcpy(info->idstr, qemu_ram_get_idstr(block)); + len = g_strlcpy(info->idstr, qemu_ram_get_idstr(block), + sizeof(info->idstr)); + g_assert(len < sizeof(info->idstr)); } static void free_ramblock_dirty_info(struct RamblockDirtyInfo *infos, int count)