From 4b9e04367afe214e06736685a7962fcbadd8b0af Mon Sep 17 00:00:00 2001 From: Qing Wang Date: Thu, 14 Oct 2021 23:50:54 -0700 Subject: [PATCH] s390: replace snprintf in show functions with sysfs_emit show() must not use snprintf() when formatting the value to be returned to user space. Fix the coccicheck warnings: WARNING: use scnprintf or sprintf. Use sysfs_emit instead of scnprintf or sprintf makes more sense. Signed-off-by: Qing Wang Acked-by: Vineeth Vijayan Acked-by: Stefan Haberland Link: https://lore.kernel.org/r/1634280655-4908-1-git-send-email-wangqing@vivo.com [hca@linux.ibm.com: fix indentation] Signed-off-by: Heiko Carstens --- drivers/s390/block/dasd_devmap.c | 76 ++++++++++++++++++++-------------------- drivers/s390/char/raw3270.c | 12 +++---- drivers/s390/cio/chp.c | 2 +- 3 files changed, 45 insertions(+), 45 deletions(-) diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 2c40fe1..6043c83 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -731,7 +731,7 @@ static ssize_t dasd_ff_show(struct device *dev, struct device_attribute *attr, ff_flag = (devmap->features & DASD_FEATURE_FAILFAST) != 0; else ff_flag = (DASD_FEATURE_DEFAULT & DASD_FEATURE_FAILFAST) != 0; - return snprintf(buf, PAGE_SIZE, ff_flag ? "1\n" : "0\n"); + return sysfs_emit(buf, ff_flag ? "1\n" : "0\n"); } static ssize_t dasd_ff_store(struct device *dev, struct device_attribute *attr, @@ -773,7 +773,7 @@ dasd_ro_show(struct device *dev, struct device_attribute *attr, char *buf) spin_unlock(&dasd_devmap_lock); out: - return snprintf(buf, PAGE_SIZE, ro_flag ? "1\n" : "0\n"); + return sysfs_emit(buf, ro_flag ? "1\n" : "0\n"); } static ssize_t @@ -834,7 +834,7 @@ dasd_erplog_show(struct device *dev, struct device_attribute *attr, char *buf) erplog = (devmap->features & DASD_FEATURE_ERPLOG) != 0; else erplog = (DASD_FEATURE_DEFAULT & DASD_FEATURE_ERPLOG) != 0; - return snprintf(buf, PAGE_SIZE, erplog ? "1\n" : "0\n"); + return sysfs_emit(buf, erplog ? "1\n" : "0\n"); } static ssize_t @@ -1033,13 +1033,13 @@ dasd_discipline_show(struct device *dev, struct device_attribute *attr, dasd_put_device(device); goto out; } else { - len = snprintf(buf, PAGE_SIZE, "%s\n", - device->discipline->name); + len = sysfs_emit(buf, "%s\n", + device->discipline->name); dasd_put_device(device); return len; } out: - len = snprintf(buf, PAGE_SIZE, "none\n"); + len = sysfs_emit(buf, "none\n"); return len; } @@ -1056,30 +1056,30 @@ dasd_device_status_show(struct device *dev, struct device_attribute *attr, if (!IS_ERR(device)) { switch (device->state) { case DASD_STATE_NEW: - len = snprintf(buf, PAGE_SIZE, "new\n"); + len = sysfs_emit(buf, "new\n"); break; case DASD_STATE_KNOWN: - len = snprintf(buf, PAGE_SIZE, "detected\n"); + len = sysfs_emit(buf, "detected\n"); break; case DASD_STATE_BASIC: - len = snprintf(buf, PAGE_SIZE, "basic\n"); + len = sysfs_emit(buf, "basic\n"); break; case DASD_STATE_UNFMT: - len = snprintf(buf, PAGE_SIZE, "unformatted\n"); + len = sysfs_emit(buf, "unformatted\n"); break; case DASD_STATE_READY: - len = snprintf(buf, PAGE_SIZE, "ready\n"); + len = sysfs_emit(buf, "ready\n"); break; case DASD_STATE_ONLINE: - len = snprintf(buf, PAGE_SIZE, "online\n"); + len = sysfs_emit(buf, "online\n"); break; default: - len = snprintf(buf, PAGE_SIZE, "no stat\n"); + len = sysfs_emit(buf, "no stat\n"); break; } dasd_put_device(device); } else - len = snprintf(buf, PAGE_SIZE, "unknown\n"); + len = sysfs_emit(buf, "unknown\n"); return len; } @@ -1120,7 +1120,7 @@ static ssize_t dasd_vendor_show(struct device *dev, device = dasd_device_from_cdev(to_ccwdev(dev)); vendor = ""; if (IS_ERR(device)) - return snprintf(buf, PAGE_SIZE, "%s\n", vendor); + return sysfs_emit(buf, "%s\n", vendor); if (device->discipline && device->discipline->get_uid && !device->discipline->get_uid(device, &uid)) @@ -1128,7 +1128,7 @@ static ssize_t dasd_vendor_show(struct device *dev, dasd_put_device(device); - return snprintf(buf, PAGE_SIZE, "%s\n", vendor); + return sysfs_emit(buf, "%s\n", vendor); } static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL); @@ -1148,7 +1148,7 @@ dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf) device = dasd_device_from_cdev(to_ccwdev(dev)); uid_string[0] = 0; if (IS_ERR(device)) - return snprintf(buf, PAGE_SIZE, "%s\n", uid_string); + return sysfs_emit(buf, "%s\n", uid_string); if (device->discipline && device->discipline->get_uid && !device->discipline->get_uid(device, &uid)) { @@ -1183,7 +1183,7 @@ dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf) } dasd_put_device(device); - return snprintf(buf, PAGE_SIZE, "%s\n", uid_string); + return sysfs_emit(buf, "%s\n", uid_string); } static DEVICE_ATTR(uid, 0444, dasd_uid_show, NULL); @@ -1201,7 +1201,7 @@ dasd_eer_show(struct device *dev, struct device_attribute *attr, char *buf) eer_flag = dasd_eer_enabled(devmap->device); else eer_flag = 0; - return snprintf(buf, PAGE_SIZE, eer_flag ? "1\n" : "0\n"); + return sysfs_emit(buf, eer_flag ? "1\n" : "0\n"); } static ssize_t @@ -1243,7 +1243,7 @@ dasd_expires_show(struct device *dev, struct device_attribute *attr, char *buf) device = dasd_device_from_cdev(to_ccwdev(dev)); if (IS_ERR(device)) return -ENODEV; - len = snprintf(buf, PAGE_SIZE, "%lu\n", device->default_expires); + len = sysfs_emit(buf, "%lu\n", device->default_expires); dasd_put_device(device); return len; } @@ -1283,7 +1283,7 @@ dasd_retries_show(struct device *dev, struct device_attribute *attr, char *buf) device = dasd_device_from_cdev(to_ccwdev(dev)); if (IS_ERR(device)) return -ENODEV; - len = snprintf(buf, PAGE_SIZE, "%lu\n", device->default_retries); + len = sysfs_emit(buf, "%lu\n", device->default_retries); dasd_put_device(device); return len; } @@ -1324,7 +1324,7 @@ dasd_timeout_show(struct device *dev, struct device_attribute *attr, device = dasd_device_from_cdev(to_ccwdev(dev)); if (IS_ERR(device)) return -ENODEV; - len = snprintf(buf, PAGE_SIZE, "%lu\n", device->blk_timeout); + len = sysfs_emit(buf, "%lu\n", device->blk_timeout); dasd_put_device(device); return len; } @@ -1398,11 +1398,11 @@ static ssize_t dasd_hpf_show(struct device *dev, struct device_attribute *attr, return -ENODEV; if (!device->discipline || !device->discipline->hpf_enabled) { dasd_put_device(device); - return snprintf(buf, PAGE_SIZE, "%d\n", dasd_nofcx); + return sysfs_emit(buf, "%d\n", dasd_nofcx); } hpf = device->discipline->hpf_enabled(device); dasd_put_device(device); - return snprintf(buf, PAGE_SIZE, "%d\n", hpf); + return sysfs_emit(buf, "%d\n", hpf); } static DEVICE_ATTR(hpf, 0444, dasd_hpf_show, NULL); @@ -1416,13 +1416,13 @@ static ssize_t dasd_reservation_policy_show(struct device *dev, devmap = dasd_find_busid(dev_name(dev)); if (IS_ERR(devmap)) { - rc = snprintf(buf, PAGE_SIZE, "ignore\n"); + rc = sysfs_emit(buf, "ignore\n"); } else { spin_lock(&dasd_devmap_lock); if (devmap->features & DASD_FEATURE_FAILONSLCK) - rc = snprintf(buf, PAGE_SIZE, "fail\n"); + rc = sysfs_emit(buf, "fail\n"); else - rc = snprintf(buf, PAGE_SIZE, "ignore\n"); + rc = sysfs_emit(buf, "ignore\n"); spin_unlock(&dasd_devmap_lock); } return rc; @@ -1457,14 +1457,14 @@ static ssize_t dasd_reservation_state_show(struct device *dev, device = dasd_device_from_cdev(to_ccwdev(dev)); if (IS_ERR(device)) - return snprintf(buf, PAGE_SIZE, "none\n"); + return sysfs_emit(buf, "none\n"); if (test_bit(DASD_FLAG_IS_RESERVED, &device->flags)) - rc = snprintf(buf, PAGE_SIZE, "reserved\n"); + rc = sysfs_emit(buf, "reserved\n"); else if (test_bit(DASD_FLAG_LOCK_STOLEN, &device->flags)) - rc = snprintf(buf, PAGE_SIZE, "lost\n"); + rc = sysfs_emit(buf, "lost\n"); else - rc = snprintf(buf, PAGE_SIZE, "none\n"); + rc = sysfs_emit(buf, "none\n"); dasd_put_device(device); return rc; } @@ -1531,7 +1531,7 @@ dasd_path_threshold_show(struct device *dev, device = dasd_device_from_cdev(to_ccwdev(dev)); if (IS_ERR(device)) return -ENODEV; - len = snprintf(buf, PAGE_SIZE, "%lu\n", device->path_thrhld); + len = sysfs_emit(buf, "%lu\n", device->path_thrhld); dasd_put_device(device); return len; } @@ -1578,7 +1578,7 @@ dasd_path_autodisable_show(struct device *dev, else flag = (DASD_FEATURE_DEFAULT & DASD_FEATURE_PATH_AUTODISABLE) != 0; - return snprintf(buf, PAGE_SIZE, flag ? "1\n" : "0\n"); + return sysfs_emit(buf, flag ? "1\n" : "0\n"); } static ssize_t @@ -1616,7 +1616,7 @@ dasd_path_interval_show(struct device *dev, device = dasd_device_from_cdev(to_ccwdev(dev)); if (IS_ERR(device)) return -ENODEV; - len = snprintf(buf, PAGE_SIZE, "%lu\n", device->path_interval); + len = sysfs_emit(buf, "%lu\n", device->path_interval); dasd_put_device(device); return len; } @@ -1662,9 +1662,9 @@ dasd_device_fcs_show(struct device *dev, struct device_attribute *attr, return -ENODEV; fc_sec = dasd_path_get_fcs_device(device); if (fc_sec == -EINVAL) - rc = snprintf(buf, PAGE_SIZE, "Inconsistent\n"); + rc = sysfs_emit(buf, "Inconsistent\n"); else - rc = snprintf(buf, PAGE_SIZE, "%s\n", dasd_path_get_fcs_str(fc_sec)); + rc = sysfs_emit(buf, "%s\n", dasd_path_get_fcs_str(fc_sec)); dasd_put_device(device); return rc; @@ -1677,7 +1677,7 @@ dasd_path_fcs_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) struct dasd_path *path = to_dasd_path(kobj); unsigned int fc_sec = path->fc_security; - return snprintf(buf, PAGE_SIZE, "%s\n", dasd_path_get_fcs_str(fc_sec)); + return sysfs_emit(buf, "%s\n", dasd_path_get_fcs_str(fc_sec)); } static struct kobj_attribute path_fcs_attribute = @@ -1698,7 +1698,7 @@ static ssize_t dasd_##_name##_show(struct device *dev, \ val = _func(device); \ dasd_put_device(device); \ \ - return snprintf(buf, PAGE_SIZE, "%d\n", val); \ + return sysfs_emit(buf, "%d\n", val); \ } \ static DEVICE_ATTR(_name, 0444, dasd_##_name##_show, NULL); \ diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index 646ec796..dfde0d9 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -1047,24 +1047,24 @@ raw3270_probe (struct ccw_device *cdev) static ssize_t raw3270_model_show(struct device *dev, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, "%i\n", - ((struct raw3270 *) dev_get_drvdata(dev))->model); + return sysfs_emit(buf, "%i\n", + ((struct raw3270 *)dev_get_drvdata(dev))->model); } static DEVICE_ATTR(model, 0444, raw3270_model_show, NULL); static ssize_t raw3270_rows_show(struct device *dev, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, "%i\n", - ((struct raw3270 *) dev_get_drvdata(dev))->rows); + return sysfs_emit(buf, "%i\n", + ((struct raw3270 *)dev_get_drvdata(dev))->rows); } static DEVICE_ATTR(rows, 0444, raw3270_rows_show, NULL); static ssize_t raw3270_columns_show(struct device *dev, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, "%i\n", - ((struct raw3270 *) dev_get_drvdata(dev))->cols); + return sysfs_emit(buf, "%i\n", + ((struct raw3270 *)dev_get_drvdata(dev))->cols); } static DEVICE_ATTR(columns, 0444, raw3270_columns_show, NULL); diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 1097e76..5440f28 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -285,7 +285,7 @@ static ssize_t chp_configure_show(struct device *dev, if (status < 0) return status; - return snprintf(buf, PAGE_SIZE, "%d\n", status); + return sysfs_emit(buf, "%d\n", status); } static int cfg_wait_idle(void); -- 2.7.4