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device_id: handle wwid with spaces or control characters

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non-standard wwid can be reported from sysfs with spaces/etc.
replace with "_"

(cherry picked from commit ae54e75176)
This commit is contained in:
David Teigland 2021-12-02 13:30:36 -06:00 committed by Marian Csontos
parent 9bd979855b
commit c265ff79d3
1 changed files with 7 additions and 4 deletions
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11
lib/device/device_id.c
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@ -302,6 +302,7 @@ const char *device_id_system_read(struct cmd_context *cmd, struct device *dev, u
{
char sysbuf[PATH_MAX] = { 0 };
const char *idname = NULL;
int i;
if (idtype == DEV_ID_TYPE_SYS_WWID) {
read_sys_block(cmd, dev, "device/wwid", sysbuf, sizeof(sysbuf));
@ -309,13 +310,10 @@ const char *device_id_system_read(struct cmd_context *cmd, struct device *dev, u
if (!sysbuf[0])
read_sys_block(cmd, dev, "wwid", sysbuf, sizeof(sysbuf));
/* scsi_debug wwid begins "t10.Linux scsi_debug ..." */
if (strstr(sysbuf, "scsi_debug"))
sysbuf[0] = '\0';
/* qemu wwid begins "t10.ATA QEMU HARDDISK ..." */
if (strstr(sysbuf, "QEMU HARDDISK"))
sysbuf[0] = '\0';
}
else if (idtype == DEV_ID_TYPE_SYS_SERIAL)
@ -353,6 +351,11 @@ const char *device_id_system_read(struct cmd_context *cmd, struct device *dev, u
return idname;
}
for (i = 0; i < strlen(sysbuf); i++) {
if (isblank(sysbuf[i]) || isspace(sysbuf[i]) || iscntrl(sysbuf[i]))
sysbuf[i] = '_';
}
if (!sysbuf[0])
goto_bad;