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s390-tools.14411
s390-tools-sles15-Fixup-device-name-handling.patch
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File s390-tools-sles15-Fixup-device-name-handling.patch of Package s390-tools.14411
From a4101cc9bf1d18b698ead344e6be6fe311fda41d Mon Sep 17 00:00:00 2001 From: Hannes Reinecke <hare@suse.de> Date: Thu, 5 Oct 2017 09:59:41 +0200 Subject: [PATCH] dasdfmt: Fixup device name handling get_device_name() contains a chunk of unreachable code, as the 'name' argument is never filled with any value. So turn things around to have get_device_name() always fill the 'name' argument with the real device name, and remove the devname entry from the dasdfmt_info_t structure. Signed-off-by: Hannes Reinecke <hare@suse.com> --- dasdfmt/dasdfmt.c | 70 ++++++++++++++++++++++++------------------------------- dasdfmt/dasdfmt.h | 1 - 2 files changed, 30 insertions(+), 41 deletions(-) diff --git a/dasdfmt/dasdfmt.c b/dasdfmt/dasdfmt.c index 4cf423d..3da7902 100644 --- a/dasdfmt/dasdfmt.c +++ b/dasdfmt/dasdfmt.c @@ -456,7 +456,7 @@ static void program_interrupt_signal(int sig) /* * check given device name for blanks and some special characters */ -static void get_device_name(dasdfmt_info_t *info, char *name, int argc, +static void get_device_name(dasdfmt_info_t *info, char *devname, int argc, char *argv[]) { struct util_proc_dev_entry dev_entry; @@ -470,32 +470,20 @@ static void get_device_name(dasdfmt_info_t *info, char *name, int argc, ERRMSG_EXIT(EXIT_MISUSE, "%s: No device specified!\n", prog_name); - if (info->device_id < argc) { - strcpy(info->devname, argv[info->device_id]); - } else { - if ((strchr(name, ' ') != NULL) || (strchr(name, '#') != NULL) || - (strchr(name, '[') != NULL) || (strchr(name, ']') != NULL) || - (strchr(name, '!') != NULL) || (strchr(name, '>') != NULL) || - (strchr(name, '(') != NULL) || (strchr(name, '<') != NULL) || - (strchr(name, ')') != NULL) || (strchr(name, ':') != NULL) || - (strchr(name, '&') != NULL) || (strchr(name, ';') != NULL)) - ERRMSG_EXIT(EXIT_MISUSE, "%s: Your filename contains " - "blanks or special characters!\n", - prog_name); - - strncpy(info->devname, name, PATH_MAX - 1); - info->devname[PATH_MAX - 1] = '\0'; - } + if (strlen(argv[info->device_id]) >= PATH_MAX) + ERRMSG_EXIT(EXIT_MISUSE, "%s: device name too long!\n", + prog_name); + strcpy(devname, argv[info->device_id]); - if (stat(info->devname, &dev_stat) != 0) + if (stat(devname, &dev_stat) != 0) ERRMSG_EXIT(EXIT_MISUSE, "%s: Could not get information for " - "device node %s: %s\n", prog_name, info->devname, + "device node %s: %s\n", prog_name, devname, strerror(errno)); if (minor(dev_stat.st_rdev) & PARTN_MASK) { ERRMSG_EXIT(EXIT_MISUSE, "%s: Unable to format partition %s. " "Please specify a device.\n", prog_name, - info->devname); + devname); } if (util_proc_dev_get_entry(dev_stat.st_rdev, 1, &dev_entry) == 0) { @@ -505,7 +493,7 @@ static void get_device_name(dasdfmt_info_t *info, char *name, int argc, prog_name, dev_entry.name); } else { printf("%s WARNING: Unable to get driver name for device node %s", - prog_name, info->devname); + prog_name, devname); } } @@ -586,7 +574,7 @@ static void check_layout(dasdfmt_info_t *info, unsigned int intensity) /* * check for disk type and set some variables (e.g. usage count) */ -static void check_disk(dasdfmt_info_t *info) +static void check_disk(dasdfmt_info_t *info, char *devname) { int ro, errno_save; @@ -609,13 +597,13 @@ static void check_disk(dasdfmt_info_t *info) if (strncmp(info->dasd_info.type, "ECKD", 4) != 0) { ERRMSG_EXIT(EXIT_FAILURE, "%s: Unsupported disk type\n%s is not an " - "ECKD disk!\n", prog_name, info->devname); + "ECKD disk!\n", prog_name, devname); } - if (dasd_sys_raw_track_access(info->devname)) { + if (dasd_sys_raw_track_access(devname)) { ERRMSG_EXIT(EXIT_FAILURE, "%s: Device '%s' is in raw-track access mode\n", - prog_name, info->devname); + prog_name, devname); } } @@ -935,7 +923,8 @@ static format_data_t ask_user_for_blksize(format_data_t params) /* * print all information needed to format the device */ -static void dasdfmt_print_info(dasdfmt_info_t *info, volume_label_t *vlabel, +static void dasdfmt_print_info(dasdfmt_info_t *info, char *devname, + volume_label_t *vlabel, unsigned int cylinders, unsigned int heads, format_data_t *p) { @@ -945,7 +934,7 @@ static void dasdfmt_print_info(dasdfmt_info_t *info, volume_label_t *vlabel, cylinders, heads, (cylinders * heads)); printf("\nI am going to format the device "); - printf("%s in the following way:\n", info->devname); + printf("%s in the following way:\n", devname); printf(" Device number of device : 0x%x\n", info->dasd_info.devno); printf(" Labelling device : %s\n", (info->writenolabel) ? "no" : "yes"); @@ -1376,7 +1365,8 @@ static void dasdfmt_quick_format(dasdfmt_info_t *info, unsigned int cylinders, disk_disabled = 0; } -static void do_format_dasd(dasdfmt_info_t *info, volume_label_t *vlabel, +static void do_format_dasd(dasdfmt_info_t *info, char *devname, + volume_label_t *vlabel, format_data_t *p, unsigned int cylinders, unsigned int heads) { @@ -1399,19 +1389,19 @@ static void do_format_dasd(dasdfmt_info_t *info, volume_label_t *vlabel, } if ((info->verbosity > 0) || !info->withoutprompt || info->testmode) - dasdfmt_print_info(info, vlabel, cylinders, heads, p); + dasdfmt_print_info(info, devname, vlabel, cylinders, heads, p); - count = u2s_get_host_access_count(info->devname); + count = u2s_get_host_access_count(devname); if (info->force_host) { if (count > 1) { ERRMSG_EXIT(EXIT_FAILURE, "\n%s: Disk %s is online on OS instances in %d different LPARs.\n" "Note: Your installation might include z/VM systems that are configured to\n" "automatically vary on disks, regardless of whether they are subsequently used.\n\n", - prog_name, info->devname, count); + prog_name, devname, count); } else if (count < 0) { ERRMSG("\nHosts access information not available for disk %s.\n\n", - info->devname); + devname); return; } } else if (count > 1) @@ -1420,7 +1410,7 @@ static void do_format_dasd(dasdfmt_info_t *info, volume_label_t *vlabel, "Ensure that the disk is not being used by a system outside your LPAR.\n" "Note: Your installation might include z/VM systems that are configured to\n" "automatically vary on disks, regardless of whether they are subsequently used.\n", - info->devname, count); + devname, count); if (!info->testmode) { if (!info->withoutprompt) { @@ -1471,7 +1461,6 @@ int main(int argc, char *argv[]) { dasdfmt_info_t info = { .dasd_info = {0}, - {0} }; volume_label_t vlabel; char old_volser[7]; @@ -1648,10 +1637,10 @@ int main(int argc, char *argv[]) get_device_name(&info, dev_filename, argc, argv); - filedes = open(info.devname, O_RDWR); + filedes = open(dev_filename, O_RDWR); if (filedes == -1) ERRMSG_EXIT(EXIT_FAILURE, "%s: Unable to open device %s: %s\n", - prog_name, info.devname, strerror(errno)); + prog_name, dev_filename, strerror(errno)); get_device_info(&info); @@ -1675,16 +1664,16 @@ int main(int argc, char *argv[]) exit(1); } - if (dasdfmt_get_volser(info.devname, + if (dasdfmt_get_volser(dev_filename, &info.dasd_info, old_volser) == 0) vtoc_volume_label_set_volser(&vlabel, old_volser); else ERRMSG_EXIT(EXIT_FAILURE, "%s: VOLSER not found on device %s\n", - prog_name, info.devname); + prog_name, dev_filename); } - check_disk(&info); + check_disk(&info, dev_filename); if (check_param(str, ERR_LENGTH, &format_params) < 0) ERRMSG_EXIT(EXIT_MISUSE, "%s: %s\n", prog_name, str); @@ -1695,7 +1684,8 @@ int main(int argc, char *argv[]) if (info.check) check_disk_format(&info, cylinders, heads, &format_params); else - do_format_dasd(&info, &vlabel, &format_params, cylinders, heads); + do_format_dasd(&info, dev_filename, &vlabel, + &format_params, cylinders, heads); if (close(filedes) != 0) ERRMSG("%s: error during close: %s\ncontinuing...\n", diff --git a/dasdfmt/dasdfmt.h b/dasdfmt/dasdfmt.h index 7c6f0bd..9ce3b92 100644 --- a/dasdfmt/dasdfmt.h +++ b/dasdfmt/dasdfmt.h @@ -291,7 +291,6 @@ typedef struct bootstrap2 { typedef struct dasdfmt_info { dasd_information2_t dasd_info; - char devname[PATH_MAX]; int verbosity; int testmode; int withoutprompt; -- 1.7.12.4
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