Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
kallsyms: use xmalloc() and xrealloc()
When malloc() or realloc() fails, there is not much userspace programs
can do. xmalloc() and xrealloc() are useful to bail out on a memory
allocation failure.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
+5
-18
+5
-18
scripts/kallsyms.c
+5
-18
scripts/kallsyms.c
···
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#include <ctype.h>
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#include <limits.h>
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+
#include <xalloc.h>
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+
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
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#define KSYM_NAME_LEN 512
···
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* compressed together */
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len++;
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-
sym = malloc(sizeof(*sym) + len + 1);
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if (!sym) {
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fprintf(stderr, "kallsyms failure: "
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-
"unable to allocate required amount of memory\n");
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exit(EXIT_FAILURE);
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-
}
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sym = xmalloc(sizeof(*sym) + len + 1);
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sym->addr = addr;
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sym->len = len;
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sym->sym[0] = type;
···
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if (table_cnt >= table_size) {
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table_size += 10000;
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-
table = realloc(table, sizeof(*table) * table_size);
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-
if (!table) {
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fprintf(stderr, "out of memory\n");
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fclose(fp);
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exit (1);
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-
}
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+
table = xrealloc(table, sizeof(*table) * table_size);
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}
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table[table_cnt++] = sym;
···
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/* table of offset markers, that give the offset in the compressed stream
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* every 256 symbols */
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markers_cnt = (table_cnt + 255) / 256;
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-
markers = malloc(sizeof(*markers) * markers_cnt);
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-
if (!markers) {
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fprintf(stderr, "kallsyms failure: "
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-
"unable to allocate required memory\n");
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exit(EXIT_FAILURE);
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-
}
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+
markers = xmalloc(sizeof(*markers) * markers_cnt);
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output_label("kallsyms_names");
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off = 0;