geom: Don't re-add duplicate aliases
Reviewed by: imp (informal +1; extracted from phab 24968)
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=361837
@ -652,6 +652,15 @@ g_provider_add_alias(struct g_provider *pp, const char *fmt, ...)
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sbuf_vprintf(sb, fmt, ap);
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va_end(ap);
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sbuf_finish(sb);
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LIST_FOREACH(gap, &pp->aliases, ga_next) {
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if (strcmp(gap->ga_alias, sbuf_data(sb)) != 0)
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continue;
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/* Don't re-add the same alias. */
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sbuf_delete(sb);
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return;
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}
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gap = g_malloc(sizeof(*gap) + sbuf_len(sb) + 1, M_WAITOK | M_ZERO);
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memcpy((char *)(gap + 1), sbuf_data(sb), sbuf_len(sb));
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sbuf_delete(sb);
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