From e44a22e2226a059bb46b06aae47a0f6d1c1284e9 Mon Sep 17 00:00:00 2001
From: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Date: Tue, 7 May 2019 16:13:00 +0200
Subject: [PATCH] fix segfault when a value is missing from ibpi_str[]
Replace all usages of ibpi_str[] with ibpi2str(), which always returns a
valid string.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
---
src/ibpi.h | 3 ++-
src/ledctl.c | 4 ++--
src/ledmon.c | 10 +++++-----
src/scsi.c | 2 +-
src/smp.c | 8 ++++----
src/sysfs.c | 2 +-
src/utils.c | 18 ++++++++++++++++++
src/utils.h | 4 ++++
9 files changed, 38 insertions(+), 15 deletions(-)
diff --git a/src/ibpi.h b/src/ibpi.h
index 776fba3..109f112 100644
--- a/src/ibpi.h
+++ b/src/ibpi.h
@@ -93,8 +93,9 @@ enum ibpi_pattern {
SES_REQ_DEV_OFF,
SES_REQ_FAULT,
SES_REQ_PRDFAIL,
+ ibpi_pattern_count,
};
-extern const char *ibpi_str[];
+extern const char *ibpi_str[ibpi_pattern_count];
#endif /* _IBPI_H_INCLUDED_ */
diff --git a/src/ledctl.c b/src/ledctl.c
index 2aa1abc..4dada8e 100644
--- a/src/ledctl.c
+++ b/src/ledctl.c
@@ -267,7 +267,7 @@ static void _determine(struct ibpi_state *state)
} else {
log_warning
("IBPI %s: missing block device(s)... pattern ignored.",
- ibpi_str[state->ibpi]);
+ ibpi2str(state->ibpi));
}
}
@@ -458,7 +458,7 @@ static status_t _ibpi_state_add_block(struct ibpi_state *state, char *name)
list_append(&state->block_list, blk1);
else
log_info("%s: %s: device already on the list.",
- ibpi_str[state->ibpi], path);
+ ibpi2str(state->ibpi), path);
return STATUS_SUCCESS;
}
diff --git a/src/ledmon.c b/src/ledmon.c
index 0ea2583..b775e6f 100644
--- a/src/ledmon.c
+++ b/src/ledmon.c
@@ -667,8 +667,8 @@ static void _add_block(struct block_device *block)
if (ibpi != temp->ibpi && ibpi <= IBPI_PATTERN_REMOVED) {
log_info("CHANGE %s: from '%s' to '%s'.",
- temp->sysfs_path, ibpi_str[ibpi],
- ibpi_str[temp->ibpi]);
+ temp->sysfs_path, ibpi2str(ibpi),
+ ibpi2str(temp->ibpi));
}
/* Check if name of the device changed.*/
if (strcmp(temp->sysfs_path, block->sysfs_path)) {
@@ -682,7 +682,7 @@ static void _add_block(struct block_device *block)
temp = block_device_duplicate(block);
if (temp != NULL) {
log_info("NEW %s: state '%s'.", temp->sysfs_path,
- ibpi_str[temp->ibpi]);
+ ibpi2str(temp->ibpi));
list_append(&ledmon_block_list, temp);
}
}
@@ -714,8 +714,8 @@ static void _send_msg(struct block_device *block)
block->ibpi == IBPI_PATTERN_REMOVED) {
if (block->ibpi != IBPI_PATTERN_FAILED_DRIVE) {
log_info("CHANGE %s: from '%s' to '%s'.",
- block->sysfs_path, ibpi_str[block->ibpi],
- ibpi_str[IBPI_PATTERN_FAILED_DRIVE]);
+ block->sysfs_path, ibpi2str(block->ibpi),
+ ibpi2str(IBPI_PATTERN_FAILED_DRIVE));
block->ibpi = IBPI_PATTERN_FAILED_DRIVE;
} else {
char *host = strstr(block->sysfs_path, "host");
diff --git a/src/scsi.c b/src/scsi.c
index 3267076..03b43dd 100644
--- a/src/scsi.c
+++ b/src/scsi.c
@@ -673,7 +673,7 @@ int scsi_ses_write(struct block_device *device, enum ibpi_pattern ibpi)
if (ret) {
log_warning
("Unable to send %s message to %s. Device is missing?",
- ibpi_str[ibpi], strstr(device->sysfs_path, "host"));
+ ibpi2str(ibpi), strstr(device->sysfs_path, "host"));
return ret;
}
diff --git a/src/smp.c b/src/smp.c
index 038fe02..6023b0a 100644
--- a/src/smp.c
+++ b/src/smp.c
@@ -468,16 +468,16 @@ int scsi_smp_fill_buffer(struct block_device *device, enum ibpi_pattern ibpi)
if (c++) {
log_debug
("pattern %s not supported for device (/dev/%s)",
- ibpi_str[ibpi], c);
+ ibpi2str(ibpi), c);
fprintf(stderr,
"%s(): pattern %s not supported for device (/dev/%s)\n",
- __func__, ibpi_str[ibpi], c);
+ __func__, ibpi2str(ibpi), c);
} else {
log_debug("pattern %s not supported for device %s",
- ibpi_str[ibpi], device->sysfs_path);
+ ibpi2str(ibpi), device->sysfs_path);
fprintf(stderr,
"%s(): pattern %s not supported for device\n\t(%s)\n",
- __func__, ibpi_str[ibpi], device->sysfs_path);
+ __func__, ibpi2str(ibpi), device->sysfs_path);
}
__set_errno_and_return(ENOTSUP);
}
diff --git a/src/sysfs.c b/src/sysfs.c
index 694878a..d4622dc 100644
--- a/src/sysfs.c
+++ b/src/sysfs.c
@@ -487,7 +487,7 @@ static void _set_block_state(struct block_device *block, enum ibpi_pattern ibpi)
char *debug_dev = strrchr(block->sysfs_path, '/');
debug_dev = debug_dev ? debug_dev + 1 : block->sysfs_path;
log_debug("(%s): device: %s, state: %s", __func__, debug_dev,
- ibpi_str[ibpi]);
+ ibpi2str(ibpi));
if (block->ibpi < ibpi)
block->ibpi = ibpi;
}
diff --git a/src/utils.c b/src/utils.c
index eb189b1..2920fba 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -616,3 +616,21 @@ status_t set_verbose_level(int log_level)
}
return STATUS_CMDLINE_ERROR;
}
+
+const char *ibpi2str(enum ibpi_pattern ibpi)
+{
+ static char buf[20];
+ const char *ret;
+
+ if (ibpi >= 0 && ibpi < ibpi_pattern_count)
+ ret = ibpi_str[ibpi];
+ else
+ ret = NULL;
+
+ if (!ret) {
+ snprintf(buf, sizeof(buf), "(unknown: %d)", ibpi);
+ ret = buf;
+ }
+
+ return ret;
+}
diff --git a/src/utils.h b/src/utils.h
index 720447a..67a211c 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -27,6 +27,7 @@
#include "list.h"
#include "status.h"
#include "syslog.h"
+#include "ibpi.h"
/**
* Maximum number of bytes in temporary buffer. It is used for local variables.
@@ -354,4 +355,7 @@ void setup_options(struct option **longopt, char **shortopt, int *options,
int options_nr);
int get_option_id(const char *optarg);
status_t set_verbose_level(int log_level);
+
+const char *ibpi2str(enum ibpi_pattern ibpi);
+
#endif /* _UTILS_H_INCLUDED_ */
--
2.20.1