Fix bug of mmc.c not checking read_file result.


This bug causes segment fault when reading name node of
SDIO mmc device's /sys file, which is not existed at all.

Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>

parent 227c74af

vold/mmc.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -158,6 +158,10 @@ static int mmc_bootstrap_card(char *sysfs_path)

		sprintf(filename, "/sys%s/name", devpath);
		p = read_file(filename, &sz);
		if (!p) {
		LOGE("Unable to read MMC name: %s", filename);
		return -errno;
		}
		p[strlen(p) - 1] = '\0';
		sprintf(tmp, "MMC_NAME=%s", p);
		free(p);