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block: Use glib2 instead of strcasecmp/strncasecmp

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This is a change in semantics. g_ascii_strcasecmp() doesn't honour
locale but strcasecmp() does. But this is OK for at least one reason:
 (1) QEMU always runs with the C locale so there's not an actual
     behaviour change here
 (2) we want the comparison on url prefix and it should be a plain ASCII
     one, not to do weird things with "I" in Turkish locales,
     so g_ascii_strcasecmp() is better as it's explicit about that

Signed-off-by: Kostiantyn Kostiuk <kkostiuk@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Link: https://lore.kernel.org/r/20260327134401.270186-4-kkostiuk@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Kostiantyn Kostiuk
2026-03-27 15:43:49 +02:00
committed by Paolo Bonzini
parent 261c09999b
commit 149c82cad2
1 changed files with 2 additions and 2 deletions
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4
block/curl.c
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@@ -871,8 +871,8 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags,
goto out;
}
if ((!strncasecmp(s->url, "http://", strlen("http://"))
|| !strncasecmp(s->url, "https://", strlen("https://")))
if ((!g_ascii_strncasecmp(s->url, "http://", strlen("http://"))
|| !g_ascii_strncasecmp(s->url, "https://", strlen("https://")))
&& !s->accept_range) {
pstrcpy(state->errmsg, CURL_ERROR_SIZE,
"Server does not support 'range' (byte ranges).");