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use malloc() + copy + free() instead of realloc()

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This commit is contained in:
Ben Gras 2006-06-23 12:07:41 +00:00
parent 3ffa1684ae
commit 0e9c6932c4
1 changed files with 11 additions and 4 deletions
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15
lib/syslib/safecopies.c
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@ -66,19 +66,26 @@ cpf_grow(void)
new_size = (1+ngrants)*2;
assert(new_size > ngrants);
/* Grow block to new size. */
if(!(new_grants=realloc(grants, new_size * sizeof(grants[0]))))
/* Allocate a block of new size. */
if(!(new_grants=malloc(new_size * sizeof(grants[0]))))
return;
/* Copy old block to new block. */
if(grants && ngrants > 0)
memcpy(new_grants, grants, ngrants * sizeof(grants[0]));
/* Make sure new slots are marked unused (CPF_USED is clear). */
for(g = ngrants; g < new_size; g++)
grants[g].cp_flags = 0;
new_grants[g].cp_flags = 0;
/* Inform kernel about new size (and possibly new location). */
if(sys_privctl(SELF, SYS_PRIV_SET_GRANTS, new_size, new_grants))
if(sys_privctl(SELF, SYS_PRIV_SET_GRANTS, new_size, new_grants)) {
free(new_grants);
return; /* Failed - don't grow then. */
}
/* Update internal data. */
if(grants && ngrants > 0) free(grants);
grants = new_grants;
ngrants = new_size;
}