diff options
Diffstat (limited to 'disk-utils/fdisk-list.c')
| -rw-r--r-- | disk-utils/fdisk-list.c | 553 |
1 files changed, 553 insertions, 0 deletions
diff --git a/disk-utils/fdisk-list.c b/disk-utils/fdisk-list.c new file mode 100644 index 0000000..f93ed10 --- /dev/null +++ b/disk-utils/fdisk-list.c @@ -0,0 +1,553 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Copyright (C) 2014 Karel Zak <kzak@redhat.com> + */ +#include <libfdisk.h> +#include <libsmartcols.h> +#include <assert.h> + +#include "c.h" +#include "xalloc.h" +#include "nls.h" +#include "blkdev.h" +#include "mbsalign.h" +#include "pathnames.h" +#include "canonicalize.h" +#include "strutils.h" +#include "sysfs.h" +#include "colors.h" +#include "ttyutils.h" + +#include "fdisk-list.h" + +/* see init_fields() */ +static const char *fields_string; +static int *fields_ids; +static size_t fields_nids; +static const struct fdisk_label *fields_label; + +static int is_ide_cdrom_or_tape(char *device) +{ + int fd, ret; + + if ((fd = open(device, O_RDONLY|O_NONBLOCK)) < 0) + return 0; + ret = blkdev_is_cdrom(fd); + + close(fd); + return ret; +} + +void list_disk_identifier(struct fdisk_context *cxt) +{ + struct fdisk_label *lb = fdisk_get_label(cxt, NULL); + char *id = NULL; + + if (fdisk_has_label(cxt)) + fdisk_info(cxt, _("Disklabel type: %s"), + fdisk_label_get_name(lb)); + + if (!fdisk_is_details(cxt) && fdisk_get_disklabel_id(cxt, &id) == 0 && id) { + fdisk_info(cxt, _("Disk identifier: %s"), id); + free(id); + } +} + +void list_disk_geometry(struct fdisk_context *cxt) +{ + struct fdisk_label *lb = fdisk_get_label(cxt, NULL); + uint64_t bytes = fdisk_get_nsectors(cxt) * fdisk_get_sector_size(cxt); + char *strsz = size_to_human_string(SIZE_DECIMAL_2DIGITS + | SIZE_SUFFIX_SPACE + | SIZE_SUFFIX_3LETTER, bytes); + + color_scheme_enable("header", UL_COLOR_BOLD); + fdisk_info(cxt, _("Disk %s: %s, %ju bytes, %ju sectors"), + fdisk_get_devname(cxt), strsz, + bytes, (uintmax_t) fdisk_get_nsectors(cxt)); + color_disable(); + free(strsz); + + if (fdisk_get_devmodel(cxt)) + fdisk_info(cxt, _("Disk model: %s"), fdisk_get_devmodel(cxt)); + + if (lb && (fdisk_label_require_geometry(lb) || fdisk_use_cylinders(cxt))) + fdisk_info(cxt, _("Geometry: %d heads, %ju sectors/track, %ju cylinders"), + fdisk_get_geom_heads(cxt), + (uintmax_t) fdisk_get_geom_sectors(cxt), + (uintmax_t) fdisk_get_geom_cylinders(cxt)); + + fdisk_info(cxt, _("Units: %s of %d * %ld = %ld bytes"), + fdisk_get_unit(cxt, FDISK_PLURAL), + fdisk_get_units_per_sector(cxt), + fdisk_get_sector_size(cxt), + fdisk_get_units_per_sector(cxt) * fdisk_get_sector_size(cxt)); + + fdisk_info(cxt, _("Sector size (logical/physical): %lu bytes / %lu bytes"), + fdisk_get_sector_size(cxt), + fdisk_get_physector_size(cxt)); + fdisk_info(cxt, _("I/O size (minimum/optimal): %lu bytes / %lu bytes"), + fdisk_get_minimal_iosize(cxt), + fdisk_get_optimal_iosize(cxt)); + if (fdisk_get_alignment_offset(cxt)) + fdisk_info(cxt, _("Alignment offset: %lu bytes"), + fdisk_get_alignment_offset(cxt)); + + list_disk_identifier(cxt); +} + +void list_disklabel(struct fdisk_context *cxt) +{ + struct fdisk_table *tb = NULL; + struct fdisk_partition *pa = NULL; + struct fdisk_iter *itr = NULL; + struct fdisk_label *lb; + struct libscols_table *out = NULL; + const char *bold = NULL; + int *ids = NULL; /* IDs of fdisk_fields */ + size_t nids = 0, i; + int post = 0; + + /* print label specific stuff by libfdisk FDISK_ASK_INFO API */ + fdisk_list_disklabel(cxt); + + /* get partitions and generate output */ + if (fdisk_get_partitions(cxt, &tb) || fdisk_table_get_nents(tb) <= 0) + goto done; + + ids = init_fields(cxt, NULL, &nids); + if (!ids) + goto done; + + itr = fdisk_new_iter(FDISK_ITER_FORWARD); + if (!itr) { + fdisk_warn(cxt, _("failed to allocate iterator")); + goto done; + } + + out = scols_new_table(); + if (!out) { + fdisk_warn(cxt, _("failed to allocate output table")); + goto done; + } + + if (colors_wanted()) { + scols_table_enable_colors(out, 1); + bold = color_scheme_get_sequence("header", UL_COLOR_BOLD); + } + + lb = fdisk_get_label(cxt, NULL); + assert(lb); + + /* define output table columns */ + for (i = 0; i < nids; i++) { + int fl = 0; + struct libscols_column *co; + const struct fdisk_field *field = + fdisk_label_get_field(lb, ids[i]); + if (!field) + continue; + if (fdisk_field_is_number(field)) + fl |= SCOLS_FL_RIGHT; + if (fdisk_field_get_id(field) == FDISK_FIELD_TYPE) + fl |= SCOLS_FL_TRUNC; + + co = scols_table_new_column(out, + _(fdisk_field_get_name(field)), + fdisk_field_get_width(field), fl); + if (!co) + goto done; + + /* set column header color */ + if (bold) + scols_cell_set_color(scols_column_get_header(co), bold); + } + + /* fill-in output table */ + while (fdisk_table_next_partition(tb, itr, &pa) == 0) { + struct libscols_line *ln = scols_table_new_line(out, NULL); + + if (!ln) { + fdisk_warn(cxt, _("failed to allocate output line")); + goto done; + } + + for (i = 0; i < nids; i++) { + char *data = NULL; + + if (fdisk_partition_to_string(pa, cxt, ids[i], &data)) + continue; + if (scols_line_refer_data(ln, i, data)) { + fdisk_warn(cxt, _("failed to add output data")); + goto done; + } + } + } + + /* print */ + if (!scols_table_is_empty(out)) { + fdisk_info(cxt, "%s", ""); /* just line break */ + scols_print_table(out); + } + + /* print warnings */ + fdisk_reset_iter(itr, FDISK_ITER_FORWARD); + while (itr && fdisk_table_next_partition(tb, itr, &pa) == 0) { + if (!fdisk_partition_has_start(pa)) + continue; + if (!fdisk_lba_is_phy_aligned(cxt, fdisk_partition_get_start(pa))) { + if (!post) + fdisk_info(cxt, "%s", ""); /* line break */ + fdisk_warnx(cxt, _("Partition %zu does not start on physical sector boundary."), + fdisk_partition_get_partno(pa) + 1); + post++; + } + if (fdisk_partition_has_wipe(cxt, pa)) { + if (!post) + fdisk_info(cxt, "%s", ""); /* line break */ + + fdisk_info(cxt, _("Filesystem/RAID signature on partition %zu will be wiped."), + fdisk_partition_get_partno(pa) + 1); + post++; + } + } + + if (fdisk_table_wrong_order(tb)) { + if (!post) + fdisk_info(cxt, "%s", ""); /* line break */ + fdisk_info(cxt, _("Partition table entries are not in disk order.")); + } +done: + scols_unref_table(out); + fdisk_unref_table(tb); + fdisk_free_iter(itr); +} + +void list_freespace(struct fdisk_context *cxt) +{ + struct fdisk_table *tb = NULL; + struct fdisk_partition *pa = NULL; + struct fdisk_iter *itr = NULL; + struct libscols_table *out = NULL; + const char *bold = NULL; + size_t i; + uintmax_t sumsize = 0, bytes = 0; + char *strsz; + + static const char *colnames[] = { N_("Start"), N_("End"), N_("Sectors"), N_("Size") }; + static const int colids[] = { FDISK_FIELD_START, FDISK_FIELD_END, FDISK_FIELD_SECTORS, FDISK_FIELD_SIZE }; + + if (fdisk_get_freespaces(cxt, &tb)) + goto done; + + itr = fdisk_new_iter(FDISK_ITER_FORWARD); + if (!itr) { + fdisk_warn(cxt, _("failed to allocate iterator")); + goto done; + } + + out = scols_new_table(); + if (!out) { + fdisk_warn(cxt, _("failed to allocate output table")); + goto done; + } + + if (colors_wanted()) { + scols_table_enable_colors(out, 1); + bold = color_scheme_get_sequence("header", UL_COLOR_BOLD); + } + + for (i = 0; i < ARRAY_SIZE(colnames); i++) { + struct libscols_column *co = scols_table_new_column(out, _(colnames[i]), 5, SCOLS_FL_RIGHT); + + if (!co) + goto done; + if (bold) + scols_cell_set_color(scols_column_get_header(co), bold); + } + + /* fill-in output table */ + while (fdisk_table_next_partition(tb, itr, &pa) == 0) { + struct libscols_line *ln = scols_table_new_line(out, NULL); + char *data; + + if (!ln) { + fdisk_warn(cxt, _("failed to allocate output line")); + goto done; + } + for (i = 0; i < ARRAY_SIZE(colids); i++) { + if (fdisk_partition_to_string(pa, cxt, colids[i], &data)) + continue; + if (scols_line_refer_data(ln, i, data)) { + fdisk_warn(cxt, _("failed to add output data")); + goto done; + } + } + + if (fdisk_partition_has_size(pa)) + sumsize += fdisk_partition_get_size(pa); + } + + bytes = sumsize * fdisk_get_sector_size(cxt); + strsz = size_to_human_string(SIZE_DECIMAL_2DIGITS + | SIZE_SUFFIX_SPACE + | SIZE_SUFFIX_3LETTER, bytes); + + color_scheme_enable("header", UL_COLOR_BOLD); + fdisk_info(cxt, _("Unpartitioned space %s: %s, %ju bytes, %ju sectors"), + fdisk_get_devname(cxt), strsz, + bytes, sumsize); + color_disable(); + free(strsz); + + fdisk_info(cxt, _("Units: %s of %d * %ld = %ld bytes"), + fdisk_get_unit(cxt, FDISK_PLURAL), + fdisk_get_units_per_sector(cxt), + fdisk_get_sector_size(cxt), + fdisk_get_units_per_sector(cxt) * fdisk_get_sector_size(cxt)); + + fdisk_info(cxt, _("Sector size (logical/physical): %lu bytes / %lu bytes"), + fdisk_get_sector_size(cxt), + fdisk_get_physector_size(cxt)); + + /* print */ + if (!scols_table_is_empty(out)) { + fdisk_info(cxt, "%s", ""); /* line break */ + scols_print_table(out); + } +done: + scols_unref_table(out); + fdisk_unref_table(tb); + fdisk_free_iter(itr); +} + +char *next_proc_partition(FILE **f) +{ + char line[128 + 1]; + + if (!*f) { + *f = fopen(_PATH_PROC_PARTITIONS, "r"); + if (!*f) { + warn(_("cannot open %s"), _PATH_PROC_PARTITIONS); + return NULL; + } + } + + while (fgets(line, sizeof(line), *f)) { + char buf[PATH_MAX], *cn; + dev_t devno; + + if (sscanf(line, " %*d %*d %*d %128[^\n ]", buf) != 1) + continue; + + devno = sysfs_devname_to_devno(buf); + if (devno <= 0) + continue; + + if (sysfs_devno_is_dm_private(devno, NULL) || + sysfs_devno_is_wholedisk(devno) <= 0) + continue; + + if (!sysfs_devno_to_devpath(devno, buf, sizeof(buf))) + continue; + + cn = canonicalize_path(buf); + if (!cn) + continue; + + if (!is_ide_cdrom_or_tape(cn)) + return cn; + } + fclose(*f); + *f = NULL; + + return NULL; +} + +int print_device_pt(struct fdisk_context *cxt, char *device, int warnme, + int verify, int separator) +{ + if (fdisk_assign_device(cxt, device, 1) != 0) { /* read-only */ + if (warnme || errno == EACCES) + warn(_("cannot open %s"), device); + return -1; + } + + if (separator) + fputs("\n\n", stdout); + + list_disk_geometry(cxt); + + if (fdisk_has_label(cxt)) { + list_disklabel(cxt); + if (verify) + fdisk_verify_disklabel(cxt); + } + fdisk_deassign_device(cxt, 1); + return 0; +} + +int print_device_freespace(struct fdisk_context *cxt, char *device, int warnme, + int separator) +{ + if (fdisk_assign_device(cxt, device, 1) != 0) { /* read-only */ + if (warnme || errno == EACCES) + warn(_("cannot open %s"), device); + return -1; + } + + if (separator) + fputs("\n\n", stdout); + + list_freespace(cxt); + fdisk_deassign_device(cxt, 1); + return 0; +} + +void print_all_devices_pt(struct fdisk_context *cxt, int verify) +{ + FILE *f = NULL; + int sep = 0; + char *dev; + + while ((dev = next_proc_partition(&f))) { + print_device_pt(cxt, dev, 0, verify, sep); + free(dev); + sep = 1; + } +} + +void print_all_devices_freespace(struct fdisk_context *cxt) +{ + FILE *f = NULL; + int sep = 0; + char *dev; + + while ((dev = next_proc_partition(&f))) { + print_device_freespace(cxt, dev, 0, sep); + free(dev); + sep = 1; + } +} + +/* usable for example in usage() */ +void list_available_columns(FILE *out) +{ + size_t i; + int termwidth; + struct fdisk_label *lb = NULL; + struct fdisk_context *cxt = fdisk_new_context(); + + if (!cxt) + return; + + termwidth = get_terminal_width(80); + + fprintf(out, USAGE_COLUMNS); + + while (fdisk_next_label(cxt, &lb) == 0) { + size_t width = 6; /* label name and separators */ + + fprintf(out, " %s:", fdisk_label_get_name(lb)); + for (i = 1; i < FDISK_NFIELDS; i++) { + const struct fdisk_field *fl = fdisk_label_get_field(lb, i); + const char *name = fl ? fdisk_field_get_name(fl) : NULL; + size_t len; + + if (!name) + continue; + len = strlen(name) + 1; + if (width + len > (size_t) termwidth) { + fputs("\n ", out); + width = 6; + } + fprintf(out, " %s", name); + width += len; + } + fputc('\n', out); + } + + fdisk_unref_context(cxt); +} + +static int fieldname_to_id(const char *name, size_t namesz) +{ + const struct fdisk_field *fl; + char buf[namesz + 1]; + + assert(name); + assert(namesz); + assert(fields_label); + + memcpy(buf, name, namesz); + buf[namesz] = '\0'; + + fl = fdisk_label_get_field_by_name(fields_label, buf); + if (!fl) { + warnx(_("%s unknown column: %s"), + fdisk_label_get_name(fields_label), buf); + return -1; + } + return fdisk_field_get_id(fl); +} + +/* + * Initialize array with output columns (fields_ids[]) according to + * comma delimited list of columns (@str). If the list string is not + * defined then use library defaults. This function is "-o <list>" + * backend. + * + * If the columns are already initialized then returns already existing columns. + */ +int *init_fields(struct fdisk_context *cxt, const char *str, size_t *n) +{ + int *dflt_ids = NULL; + struct fdisk_label *lb; + + if (!fields_string) + fields_string = str; + if (!cxt) + goto done; + + lb = fdisk_get_label(cxt, NULL); + + if (!lb || fields_label != lb) { /* label changed: reset */ + free(fields_ids); + fields_ids = NULL; + fields_label = lb; + fields_nids = 0; + } + + if (!fields_label) /* no label */ + goto done; + if (fields_nids) + goto done; /* already initialized */ + + /* library default */ + if (fdisk_label_get_fields_ids(NULL, cxt, &dflt_ids, &fields_nids)) + goto done; + + fields_ids = xcalloc(FDISK_NFIELDS * 2, sizeof(int)); + + /* copy defaults to the list with wanted fields */ + memcpy(fields_ids, dflt_ids, fields_nids * sizeof(int)); + free(dflt_ids); + + /* extend or replace fields_nids[] according to fields_string */ + if (fields_string && + string_add_to_idarray(fields_string, fields_ids, FDISK_NFIELDS * 2, + &fields_nids, fieldname_to_id) < 0) + exit(EXIT_FAILURE); +done: + fields_label = NULL; + if (n) + *n = fields_nids; + return fields_ids; +} + |