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Diffstat (limited to 'e2fsck/message.c')
| -rw-r--r-- | e2fsck/message.c | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/e2fsck/message.c b/e2fsck/message.c new file mode 100644 index 00000000..c5f25938 --- /dev/null +++ b/e2fsck/message.c @@ -0,0 +1,329 @@ +/* + * message.c --- print e2fsck messages (with compression) + * + * Copyright 1996, 1997 by Theodore Ts'o + * + * %Begin-Header% + * This file may be redistributed under the terms of the GNU Public + * License. + * %End-Header% + * + * print_e2fsck_message() prints a message to the user, using + * compression techniques and expansions of abbreviations. + * + * The following % expansions are supported: + * + * %b <blk> block number + * %B <blkcount> integer + * %di <dirent>->ino inode number + * %dn <dirent>->name string + * %D <dir> inode number + * %g <group> integer + * %i <ino> inode number + * %Is <inode> -> i_size + * %Ib <inode> -> i_blocks + * %Il <inode> -> i_links_count + * %Im <inode> -> i_mode + * %IM <inode> -> i_mtime + * %IF <inode> -> i_faddr + * %If <inode> -> i_file_acl + * %Id <inode> -> i_dir_acl + * %j <ino2> inode number + * %N <num> + * %p ext2fs_get_pathname of directory <ino> + * %P ext2fs_get_pathname of <dirent>->ino with <ino2> as + * the containing directory. (If dirent is NULL + * then return the pathname of directory <ino2>) + * %q ext2fs_get_pathname of directory <dir> + * %Q ext2fs_get_pathname of directory <ino> with <dir> as + * the containing directory. + * + * The following '@' expansions are supported: + * + * @b block + * @B bitmap + * @C conflicts with some other fs block + * @i inode + * @D deleted + * @d directory + * @e entry + * @E Entry '%Dn' in %p (%i) + * @F for @i %i (%Q) is + * @g group + * @l lost+found + * @L is a link + * @u unattached + * @r root inode + * @z zero-length + */ + +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <ctype.h> +#include <termios.h> + +#include "e2fsck.h" + +#include "problem.h" + +#ifdef __GNUC__ +#define _INLINE_ __inline__ +#else +#define _INLINE_ +#endif + +/* + * This structure defines the abbreviations used by the text strings + * below. The first character in the string is the index letter. An + * abbreviation of the form '@<i>' is expanded by looking up the index + * letter <i> in the table below. + */ +static const char *abbrevs[] = { + "bblock", + "Bbitmap", + "Cconflicts with some other fs @b", + "iinode", + "Ddeleted", + "ddirectory", + "eentry", + "E@e '%Dn' in %p (%i)", + "Ffor @i %i (%Q) is", + "ggroup", + "llost+found", + "Lis a link", + "uunattached", + "rroot @i", + "sshould be", + "zzero-length", + "@@", + 0 + }; + +/* + * Give more user friendly names to the "special" inodes. + */ +#define num_special_inodes 7 +static const char *special_inode_name[] = +{ + "<The NULL inode>", /* 0 */ + "<The bad blocks inode>", /* 1 */ + "/", /* 2 */ + "<The ACL index inode>", /* 3 */ + "<The ACL data inode>", /* 4 */ + "<The boot loader inode>", /* 5 */ + "<The undelete directory inode>" /* 6 */ +}; + +/* + * This function prints a pathname, using the ext2fs_get_pathname + * function + */ +static void print_pathname(ext2_filsys fs, ino_t dir, ino_t ino) +{ + errcode_t retval; + char *path; + + if (!dir && (ino < num_special_inodes)) { + fputs(special_inode_name[ino], stdout); + return; + } + + retval = ext2fs_get_pathname(fs, dir, ino, &path); + if (retval) + fputs("???", stdout); + else { + fputs(path, stdout); + free(path); + } +} + +/* + * This function handles the '@' expansion. We allow recursive + * expansion; an @ expression can contain further '@' and '%' + * expressions. + */ +static _INLINE_ void expand_at_expression(ext2_filsys fs, char ch, + struct problem_context *ctx, + int *first) +{ + const char **cpp, *str; + + /* Search for the abbreviation */ + for (cpp = abbrevs; *cpp; cpp++) { + if (ch == *cpp[0]) + break; + } + if (*cpp) { + str = (*cpp) + 1; + if (*first && islower(*str)) { + *first = 0; + fputc(toupper(*str++), stdout); + } + print_e2fsck_message(fs, str, ctx, *first); + } else + printf("@%c", ch); +} + +/* + * This function expands '%kX' expressions + */ +static _INLINE_ void expand_inode_expression(char ch, + struct problem_context *ctx) +{ + struct ext2_inode *inode; + char * time_str; + time_t t; + + if (!ctx || !ctx->inode) + goto no_inode; + + inode = ctx->inode; + + switch (ch) { + case 's': + printf("%u", inode->i_size); + break; + case 'b': + printf("%u", inode->i_blocks); + break; + case 'l': + printf("%d", inode->i_links_count); + break; + case 'm': + printf("0%o", inode->i_mode); + break; + case 'M': + t = inode->i_mtime; + time_str = ctime(&t); + printf("%.24s", time_str); + break; + case 'F': + printf("%u", inode->i_faddr); + break; + case 'f': + printf("%u", inode->i_file_acl); + break; + case 'd': + printf("%u", inode->i_dir_acl); + break; + default: + no_inode: + printf("%%I%c", ch); + break; + } +} + +/* + * This function expands '%dX' expressions + */ +static _INLINE_ void expand_dirent_expression(char ch, + struct problem_context *ctx) +{ + struct ext2_dir_entry *dirent; + int len; + + if (!ctx || !ctx->dirent) + goto no_dirent; + + dirent = ctx->dirent; + + switch (ch) { + case 'i': + printf("%u", dirent->inode); + break; + case 'n': + len = dirent->name_len; + if (len > EXT2_NAME_LEN) + len = EXT2_NAME_LEN; + if (len > dirent->rec_len) + len = dirent->rec_len; + printf("%.*s", dirent->name_len, dirent->name); + break; + default: + no_dirent: + printf("%%D%c", ch); + break; + } +} + +static _INLINE_ void expand_percent_expression(ext2_filsys fs, char ch, + struct problem_context *ctx) +{ + if (!ctx) + goto no_context; + + switch (ch) { + case '%': + fputc('%', stdout); + break; + case 'b': + printf("%u", ctx->blk); + break; + case 'B': + printf("%d", ctx->blkcount); + break; + case 'd': + printf("%lu", ctx->dir); + break; + case 'g': + printf("%d", ctx->group); + break; + case 'i': + printf("%lu", ctx->ino); + break; + case 'j': + printf("%lu", ctx->ino2); + break; + case 'N': + printf("%u", ctx->num); + break; + case 'p': + print_pathname(fs, ctx->ino, 0); + break; + case 'P': + print_pathname(fs, ctx->ino2, + ctx->dirent ? ctx->dirent->inode : 0); + break; + case 'q': + print_pathname(fs, ctx->dir, 0); + break; + case 'Q': + print_pathname(fs, ctx->dir, ctx->ino); + break; + default: + no_context: + printf("%%%c", ch); + break; + } +} + +void print_e2fsck_message(ext2_filsys fs, const char *msg, + struct problem_context *ctx, int first) +{ + const char * cp; + int i; + + for (cp = msg; *cp; cp++) { + if (cp[0] == '@') { + cp++; + expand_at_expression(fs, *cp, ctx, &first); + } else if (cp[0] == '%' && cp[1] == 'I') { + cp += 2; + expand_inode_expression(*cp, ctx); + } else if (cp[0] == '%' && cp[1] == 'D') { + cp += 2; + expand_dirent_expression(*cp, ctx); + } else if ((cp[0] == '%')) { + cp++; + expand_percent_expression(fs, *cp, ctx); + } else { + for (i=0; cp[i]; i++) + if ((cp[i] == '@') || cp[i] == '%') + break; + printf("%.*s", i, cp); + cp += i-1; + } + first = 0; + } +} |