diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ls.c | 148 |
1 files changed, 83 insertions, 65 deletions
@@ -214,6 +214,9 @@ struct fileinfo /* For long listings, true if the file has an access control list, or an SELinux security context. */ enum acl_type acl_type; + + /* For color listings, true if a regular file has capability info. */ + bool has_capability; }; #define LEN_STR_PAIR(s) sizeof (s) - 1, s @@ -241,9 +244,8 @@ static bool file_ignored (char const *name); static uintmax_t gobble_file (char const *name, enum filetype type, ino_t inode, bool command_line_arg, char const *dirname); -static bool print_color_indicator (const char *name, mode_t mode, int linkok, - bool stat_ok, enum filetype type, - nlink_t nlink); +static bool print_color_indicator (const struct fileinfo *f, + bool symlink_target); static void put_indicator (const struct bin_str *ind); static void add_ignore_pattern (const char *pattern); static void attach (char *dest, const char *dirname, const char *name); @@ -264,11 +266,9 @@ static int format_user_width (uid_t u); static int format_group_width (gid_t g); static void print_long_format (const struct fileinfo *f); static void print_many_per_line (void); -static size_t print_name_with_quoting (const char *p, mode_t mode, - int linkok, bool stat_ok, - enum filetype type, +static size_t print_name_with_quoting (const struct fileinfo *f, + bool symlink_target, struct obstack *stack, - nlink_t nlink, size_t start_col); static void prep_non_filename_text (void); static bool print_type_indicator (bool stat_ok, mode_t mode, @@ -2637,6 +2637,37 @@ unsigned_file_size (off_t size) return size + (size < 0) * ((uintmax_t) OFF_T_MAX - OFF_T_MIN + 1); } +#ifdef HAVE_CAP +/* Return true if NAME has a capability (see linux/capability.h) */ +static bool +has_capability (char const *name) +{ + char *result; + bool has_cap; + + cap_t cap_d = cap_get_file (name); + if (cap_d == NULL) + return false; + + result = cap_to_text (cap_d, NULL); + cap_free (cap_d); + if (!result) + return false; + + /* check if human-readable capability string is empty */ + has_cap = !!*result; + + cap_free (result); + return has_cap; +} +#else +static bool +has_capability (char const *name ATTRIBUTE_UNUSED) +{ + return false; +} +#endif + /* Enter and remove entries in the table `cwd_file'. */ /* Empty the table of files. */ @@ -2718,11 +2749,16 @@ gobble_file (char const *name, enum filetype type, ino_t inode, to see if it's executable. */ || (type == normal && (indicator_style == classify /* This is so that --color ends up - highlighting files with the executable - bit set even when options like -F are - not specified. */ + highlighting files with these mode + bits set even when options like -F are + not specified. Note we do a redundant + stat in the very unlikely case where + C_CAP is set but not the others. */ || (print_with_color - && is_colored (C_EXEC)) + && (is_colored (C_EXEC) + || is_colored (C_SETUID) + || is_colored (C_SETGID) + || is_colored (C_CAP))) ))))) { @@ -2793,6 +2829,11 @@ gobble_file (char const *name, enum filetype type, ino_t inode, f->stat_ok = true; + /* Note has_capability() adds around 30% runtime to `ls --color` */ + if ((type == normal || S_ISREG (f->stat.st_mode)) + && print_with_color && is_colored (C_CAP)) + f->has_capability = has_capability (absolute_name); + if (format == long_format || print_scontext) { bool have_selinux = false; @@ -3761,18 +3802,14 @@ print_long_format (const struct fileinfo *f) } DIRED_FPUTS (buf, stdout, p - buf); - size_t w = print_name_with_quoting (f->name, FILE_OR_LINK_MODE (f), f->linkok, - f->stat_ok, f->filetype, &dired_obstack, - f->stat.st_nlink, p - buf); + size_t w = print_name_with_quoting (f, false, &dired_obstack, p - buf); if (f->filetype == symbolic_link) { if (f->linkname) { DIRED_FPUTS_LITERAL (" -> ", stdout); - print_name_with_quoting (f->linkname, f->linkmode, f->linkok - 1, - f->stat_ok, f->filetype, NULL, - f->stat.st_nlink, (p - buf) + w + 4); + print_name_with_quoting (f, true, NULL, (p - buf) + w + 4); if (indicator_style != none) print_type_indicator (true, f->linkmode, unknown); } @@ -3948,19 +3985,20 @@ quote_name (FILE *out, const char *name, struct quoting_options const *options, } static size_t -print_name_with_quoting (const char *p, mode_t mode, int linkok, - bool stat_ok, enum filetype type, - struct obstack *stack, nlink_t nlink, +print_name_with_quoting (const struct fileinfo *f, + bool symlink_target, + struct obstack *stack, size_t start_col) { + const char* name = symlink_target ? f->linkname : f->name; + bool used_color_this_time - = (print_with_color - && print_color_indicator (p, mode, linkok, stat_ok, type, nlink)); + = (print_with_color && print_color_indicator (f, symlink_target)); if (stack) PUSH_CURRENT_DIRED_POS (stack); - size_t width = quote_name (stdout, p, filename_quoting_options, NULL); + size_t width = quote_name (stdout, name, filename_quoting_options, NULL); dired_pos += width; if (stack) @@ -4012,9 +4050,7 @@ print_file_name_and_frills (const struct fileinfo *f, size_t start_col) if (print_scontext) printf ("%*s ", format == with_commas ? 0 : scontext_width, f->scontext); - size_t width = print_name_with_quoting (f->name, FILE_OR_LINK_MODE (f), - f->linkok, f->stat_ok, f->filetype, - NULL, f->stat.st_nlink, start_col); + size_t width = print_name_with_quoting (f, false, NULL, start_col); if (indicator_style != none) width += print_type_indicator (f->stat_ok, f->stat.st_mode, f->filetype); @@ -4065,55 +4101,38 @@ print_type_indicator (bool stat_ok, mode_t mode, enum filetype type) return !!c; } -#ifdef HAVE_CAP -/* Return true if NAME has a capability (see linux/capability.h) */ -static bool -has_capability (char const *name) -{ - char *result; - bool has_cap; - - cap_t cap_d = cap_get_file (name); - if (cap_d == NULL) - return false; - - result = cap_to_text (cap_d, NULL); - cap_free (cap_d); - if (!result) - return false; - - /* check if human-readable capability string is empty */ - has_cap = !!*result; - - cap_free (result); - return has_cap; -} -#else -static bool -has_capability (char const *name ATTRIBUTE_UNUSED) -{ - return false; -} -#endif - /* Returns whether any color sequence was printed. */ static bool -print_color_indicator (const char *name, mode_t mode, int linkok, - bool stat_ok, enum filetype filetype, - nlink_t nlink) +print_color_indicator (const struct fileinfo *f, bool symlink_target) { enum indicator_no type; struct color_ext_type *ext; /* Color extension */ size_t len; /* Length of name */ + const char* name; + mode_t mode; + int linkok; + if (symlink_target) + { + name = f->linkname; + mode = f->linkmode; + linkok = f->linkok - 1; + } + else + { + name = f->name; + mode = FILE_OR_LINK_MODE (f); + linkok = f->linkok; + } + /* Is this a nonexistent file? If so, linkok == -1. */ if (linkok == -1 && color_indicator[C_MISSING].string != NULL) type = C_MISSING; - else if (! stat_ok) + else if (!f->stat_ok) { static enum indicator_no filetype_indicator[] = FILETYPE_INDICATORS; - type = filetype_indicator[filetype]; + type = filetype_indicator[f->filetype]; } else { @@ -4125,12 +4144,11 @@ print_color_indicator (const char *name, mode_t mode, int linkok, type = C_SETUID; else if ((mode & S_ISGID) != 0 && is_colored (C_SETGID)) type = C_SETGID; - /* has_capability() called second for performance. */ - else if (is_colored (C_CAP) && has_capability (name)) + else if (is_colored (C_CAP) && f->has_capability) type = C_CAP; else if ((mode & S_IXUGO) != 0 && is_colored (C_EXEC)) type = C_EXEC; - else if ((1 < nlink) && is_colored (C_MULTIHARDLINK)) + else if ((1 < f->stat.st_nlink) && is_colored (C_MULTIHARDLINK)) type = C_MULTIHARDLINK; } else if (S_ISDIR (mode)) |