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ar71xx: mikrotik: prepend "RouterBOARD" to machine name for NOR devices

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When the device name doesn't already contain "RouterBOARD", this patch adds
this string to the machine name.

Most NOR devices already have "RouterBOARD" in their hardware-stored device name,
but not all of them.

This patch also makes the code more robust against buffer overflows.

Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
This commit is contained in:
Thibaut VARENE 2017-03-13 14:51:54 +01:00 committed by Piotr Dymacz
parent e3dc036cbf
commit e1f3cf7ede
1 changed files with 15 additions and 3 deletions
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18
target/linux/ar71xx/files/arch/mips/ath79/mach-rbspi.c
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@ -437,20 +437,32 @@ void __init rbspi_wlan_init(u16 id, int wmac_offset)
kfree(art_buf);
}
#define RBSPI_MACH_BUFLEN 64
/*
* Common platform init routine for all SPI NOR devices.
*/
static int __init rbspi_platform_setup(void)
{
const struct rb_info *info;
char buf[64];
char buf[RBSPI_MACH_BUFLEN] = "MikroTik ";
char *str;
int len = RBSPI_MACH_BUFLEN - strlen(buf) - 1;
info = rb_init_info((void *)(KSEG1ADDR(AR71XX_SPI_BASE)), 0x20000);
if (!info)
return -ENODEV;
scnprintf(buf, sizeof(buf), "MikroTik %s",
(info->board_name) ? info->board_name : "");
if (info->board_name) {
str = "RouterBOARD ";
if (strncmp(info->board_name, str, strlen(str))) {
strncat(buf, str, len);
len -= strlen(str);
}
strncat(buf, info->board_name, len);
}
else
strncat(buf, "UNKNOWN", len);
mips_set_machine_name(buf);
/* fix partitions based on flash parsing */