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sudo_lbuf_expand: round nearest power of two instead of multiple of 256.

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This commit is contained in:
Todd C. Miller
2023-01-03 21:34:20 -07:00
parent dd934d6a21
commit dc9ef69021
1 changed files with 2 additions and 3 deletions
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5
lib/util/lbuf.c
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@@ -30,6 +30,7 @@
#include "sudo_compat.h"
#include "sudo_debug.h"
#include "sudo_lbuf.h"
#include "sudo_util.h"
void
sudo_lbuf_init_v1(struct sudo_lbuf *lbuf, sudo_lbuf_output_t output,
@@ -76,11 +77,9 @@ sudo_lbuf_expand(struct sudo_lbuf *lbuf, unsigned int extra)
}
if (lbuf->len + extra + 1 > lbuf->size) {
unsigned int new_size = lbuf->len + extra + 1;
const unsigned int new_size = sudo_pow2_roundup(lbuf->len + extra + 1);
char *new_buf;
/* Round new_size up to the next multiple of 256. */
new_size = (new_size + 255) & ~255;
if ((new_buf = realloc(lbuf->buf, new_size)) == NULL) {
sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
"unable to allocate memory");