depmod: Fix writing over array length
Make sure return value in flush_stream_to() is the length written
if the value didn't the size. Fix warning on gcc 12.1:
tools/depmod.c: In function ‘output_builtin_alias_bin’:
tools/depmod.c:2465:24: warning: array subscript 4096 is above array bounds of ‘char[4096]’ [-Warray-bounds]
2465 | modname[len] = '\0';
| ~~~~~~~^~~~~
tools/depmod.c:2460:22: note: while referencing ‘modname’
2460 | char modname[PATH_MAX];
| ^~~~~~~
tools/depmod.c:2477:22: warning: array subscript 4096 is above array bounds of ‘char[4096]’ [-Warray-bounds]
2477 | value[len] = '\0';
| ~~~~~^~~~~
tools/depmod.c:2461:22: note: while referencing ‘value’
2461 | char value[PATH_MAX];
| ^~~~~
Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com>
diff --git a/tools/depmod.c b/tools/depmod.c
index 4117dd1..364b7d4 100644
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -2430,6 +2430,7 @@
if (i == dst_sz) {
WRN("Could not flush stream: %d. Partial content: %.*s\n",
ENOSPC, (int) dst_sz, dst);
+ i--;
}
return c == endchar ? i : 0;
