//usage: IF_FEATURE_LS_SORTFILES("rSXv")
//usage: IF_FEATURE_LS_TIMESTAMPS("ctu")
//usage: IF_SELINUX("kKZ") "]"
-//usage: IF_FEATURE_AUTOWIDTH(" -w WIDTH") " [FILE]..."
+//usage: IF_FEATURE_AUTOWIDTH(" [-w WIDTH]") " [FILE]..."
//usage:#define ls_full_usage "\n\n"
//usage: "List directory contents\n"
-//usage: "\nOptions:"
//usage: "\n -1 One column output"
//usage: "\n -a Include entries which start with ."
//usage: "\n -A Like -a, but exclude . and .."
enum {
TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
-SPLIT_DIR = 1,
SPLIT_FILE = 0,
+SPLIT_DIR = 1,
SPLIT_SUBDIR = 2,
-/* Bits in all_fmt: */
+/* Bits in G.all_fmt: */
/* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
/* what file information will be listed */
/* -Q GNU option, busybox always supports */
/* -k SELinux option, busybox always supports (ignores if !SELinux) */
/* Std has -k which means "show sizes in kbytes" */
-/* -FLHRctur Std options, busybox optionally supports */
-/* -p Std option, busybox optionally supports */
-/* Not fully compatible - we show not only '/' but other chars too */
+/* -LHRctur Std options, busybox optionally supports */
+/* -Fp Std options, busybox optionally supports */
/* -SXvhTw GNU options, busybox optionally supports */
-/* -T TABWIDTH is ignored (we don't use tabs on output) */
+/* -T WIDTH Ignored (we don't use tabs on output) */
/* -KZ SELinux mandated options, busybox optionally supports */
/* (coreutils 8.4 has no -K, remove it?) */
/* -e I think we made this one up (looks similar to GNU --full-time) */
/* TODO: simple toggles may be stored as OPT_xxx bits instead */
static const uint32_t opt_flags[] = {
- STYLE_COLUMNAR, /* C */
+ STYLE_COLUMNAR, /* C */
DISP_HIDDEN | DISP_DOT, /* a */
DISP_NOLIST, /* d */
LIST_INO, /* i */
/*
- * a directory entry and its stat info are stored here
+ * a directory entry and its stat info
*/
struct dnode {
- const char *name; /* the dir entry name */
- const char *fullname; /* the dir entry name */
- struct dnode *next; /* point at the next node */
- smallint fname_allocated;
- struct stat dstat; /* the file stat info */
+ const char *name; /* usually basename, but think "ls -l dir/file" */
+ const char *fullname; /* full name (usable for stat etc) */
+ struct dnode *dn_next; /* for linked list */
IF_SELINUX(security_context_t sid;)
+ smallint fname_allocated;
+
+ /* Used to avoid re-doing [l]stat at printout stage
+ * if we already collected needed data in scan stage:
+ */
+ mode_t dn_mode_lstat; /* obtained with lstat, or 0 */
+ mode_t dn_mode_stat; /* obtained with stat, or 0 */
+
+// struct stat dstat;
+// struct stat is huge. We don't need it in full.
+// At least we don't need st_dev and st_blksize,
+// but there are invisible fields as well
+// (such as nanosecond-resolution timespamps)
+// and padding, which we also don't want to store.
+// We also can pre-parse dev_t dn_rdev (in glibc, it's huge).
+// On 32-bit uclibc: dnode size went from 112 to 84 bytes.
+//
+ /* Same names as in struct stat, but with dn_ instead of st_ pfx: */
+ mode_t dn_mode; /* obtained with lstat OR stat, depending on -L etc */
+ off_t dn_size;
+#if ENABLE_FEATURE_LS_TIMESTAMPS || ENABLE_FEATURE_LS_SORTFILES
+ time_t dn_atime;
+ time_t dn_mtime;
+ time_t dn_ctime;
+#endif
+ ino_t dn_ino;
+ blkcnt_t dn_blocks;
+ nlink_t dn_nlink;
+ uid_t dn_uid;
+ gid_t dn_gid;
+ int dn_rdev_maj;
+ int dn_rdev_min;
+// dev_t dn_dev;
+// blksize_t dn_blksize;
};
struct globals {
#if ENABLE_FEATURE_LS_COLOR
smallint show_color;
+# define G_show_color (G.show_color)
+#else
+# define G_show_color 0
#endif
smallint exit_code;
unsigned all_fmt;
#if ENABLE_FEATURE_AUTOWIDTH
- unsigned terminal_width; // = TERMINAL_WIDTH;
+ unsigned terminal_width;
+# define G_terminal_width (G.terminal_width)
+#else
+# define G_terminal_width TERMINAL_WIDTH
#endif
#if ENABLE_FEATURE_LS_TIMESTAMPS
/* Do time() just once. Saves one syscall per file for "ls -l" */
#endif
} FIX_ALIASING;
#define G (*(struct globals*)&bb_common_bufsiz1)
-#if ENABLE_FEATURE_LS_COLOR
-# define show_color (G.show_color )
-#else
-enum { show_color = 0 };
-#endif
-#define exit_code (G.exit_code )
-#define all_fmt (G.all_fmt )
-#if ENABLE_FEATURE_AUTOWIDTH
-# define terminal_width (G.terminal_width)
-#else
-enum {
- terminal_width = TERMINAL_WIDTH,
-};
-#endif
-#define current_time_t (G.current_time_t)
#define INIT_G() do { \
/* we have to zero it out because of NOEXEC */ \
memset(&G, 0, sizeof(G)); \
- IF_FEATURE_AUTOWIDTH(terminal_width = TERMINAL_WIDTH;) \
- IF_FEATURE_LS_TIMESTAMPS(time(¤t_time_t);) \
+ IF_FEATURE_AUTOWIDTH(G_terminal_width = TERMINAL_WIDTH;) \
+ IF_FEATURE_LS_TIMESTAMPS(time(&G.current_time_t);) \
} while (0)
-static struct dnode *my_stat(const char *fullname, const char *name, int force_follow)
-{
- struct stat dstat;
- struct dnode *cur;
- IF_SELINUX(security_context_t sid = NULL;)
+/*** Output code ***/
- if ((option_mask32 & OPT_L) || force_follow) {
-#if ENABLE_SELINUX
- if (is_selinux_enabled()) {
- getfilecon(fullname, &sid);
- }
-#endif
- if (stat(fullname, &dstat)) {
- bb_simple_perror_msg(fullname);
- exit_code = EXIT_FAILURE;
- return 0;
- }
- } else {
-#if ENABLE_SELINUX
- if (is_selinux_enabled()) {
- lgetfilecon(fullname, &sid);
- }
-#endif
- if (lstat(fullname, &dstat)) {
- bb_simple_perror_msg(fullname);
- exit_code = EXIT_FAILURE;
- return 0;
- }
- }
-
- cur = xmalloc(sizeof(*cur));
- cur->fullname = fullname;
- cur->name = name;
- cur->dstat = dstat;
- IF_SELINUX(cur->sid = sid;)
- return cur;
-}
/* FYI type values: 1:fifo 2:char 4:dir 6:blk 8:file 10:link 12:socket
* (various wacky OSes: 13:Sun door 14:BSD whiteout 5:XENIX named file
}
#endif
-#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_FILETYPES
static char append_char(mode_t mode)
{
- if (!(all_fmt & LIST_FILETYPE))
+ if (!(G.all_fmt & LIST_FILETYPE))
return '\0';
if (S_ISDIR(mode))
return '/';
- if (!(all_fmt & LIST_CLASSIFY))
+ if (!(G.all_fmt & LIST_CLASSIFY))
return '\0';
if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
return '*';
}
#endif
-static unsigned count_dirs(struct dnode **dn, int which)
-{
- unsigned dirs, all;
-
- if (!dn)
- return 0;
-
- dirs = all = 0;
- for (; *dn; dn++) {
- const char *name;
-
- all++;
- if (!S_ISDIR((*dn)->dstat.st_mode))
- continue;
- name = (*dn)->name;
- if (which != SPLIT_SUBDIR /* if not requested to skip . / .. */
- /* or if it's not . or .. */
- || name[0] != '.' || (name[1] && (name[1] != '.' || name[2]))
- ) {
- dirs++;
- }
- }
- return which != SPLIT_FILE ? dirs : all - dirs;
-}
-
-/* get memory to hold an array of pointers */
-static struct dnode **dnalloc(unsigned num)
-{
- if (num < 1)
- return NULL;
-
- num++; /* so that we have terminating NULL */
- return xzalloc(num * sizeof(struct dnode *));
-}
-
-#if ENABLE_FEATURE_LS_RECURSIVE
-static void dfree(struct dnode **dnp)
-{
- unsigned i;
-
- if (dnp == NULL)
- return;
-
- for (i = 0; dnp[i]; i++) {
- struct dnode *cur = dnp[i];
- if (cur->fname_allocated)
- free((char*)cur->fullname);
- free(cur);
- }
- free(dnp);
-}
-#else
-#define dfree(...) ((void)0)
-#endif
-
-/* Returns NULL-terminated malloced vector of pointers (or NULL) */
-static struct dnode **splitdnarray(struct dnode **dn, int which)
-{
- unsigned dncnt, d;
- struct dnode **dnp;
-
- if (dn == NULL)
- return NULL;
-
- /* count how many dirs or files there are */
- dncnt = count_dirs(dn, which);
-
- /* allocate a file array and a dir array */
- dnp = dnalloc(dncnt);
-
- /* copy the entrys into the file or dir array */
- for (d = 0; *dn; dn++) {
- if (S_ISDIR((*dn)->dstat.st_mode)) {
- const char *name;
-
- if (!(which & (SPLIT_DIR|SPLIT_SUBDIR)))
- continue;
- name = (*dn)->name;
- if ((which & SPLIT_DIR)
- || name[0]!='.' || (name[1] && (name[1]!='.' || name[2]))
- ) {
- dnp[d++] = *dn;
- }
- } else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
- dnp[d++] = *dn;
- }
- }
- return dnp;
-}
-
-#if ENABLE_FEATURE_LS_SORTFILES
-static int sortcmp(const void *a, const void *b)
-{
- struct dnode *d1 = *(struct dnode **)a;
- struct dnode *d2 = *(struct dnode **)b;
- unsigned sort_opts = all_fmt & SORT_MASK;
- off_t dif;
-
- dif = 0; /* assume SORT_NAME */
- // TODO: use pre-initialized function pointer
- // instead of branch forest
- if (sort_opts == SORT_SIZE) {
- dif = (d2->dstat.st_size - d1->dstat.st_size);
- } else if (sort_opts == SORT_ATIME) {
- dif = (d2->dstat.st_atime - d1->dstat.st_atime);
- } else if (sort_opts == SORT_CTIME) {
- dif = (d2->dstat.st_ctime - d1->dstat.st_ctime);
- } else if (sort_opts == SORT_MTIME) {
- dif = (d2->dstat.st_mtime - d1->dstat.st_mtime);
- } else if (sort_opts == SORT_DIR) {
- dif = S_ISDIR(d2->dstat.st_mode) - S_ISDIR(d1->dstat.st_mode);
- /* } else if (sort_opts == SORT_VERSION) { */
- /* } else if (sort_opts == SORT_EXT) { */
- }
- if (dif == 0) {
- /* sort by name, or tie_breaker for other sorts */
- if (ENABLE_LOCALE_SUPPORT)
- dif = strcoll(d1->name, d2->name);
- else
- dif = strcmp(d1->name, d2->name);
- }
-
- /* Make dif fit into an int */
- if (sizeof(dif) > sizeof(int)) {
- enum { BITS_TO_SHIFT = 8 * (sizeof(dif) - sizeof(int)) };
- /* shift leaving only "int" worth of bits */
- if (dif != 0) {
- dif = 1 | (int)((uoff_t)dif >> BITS_TO_SHIFT);
- }
- }
-
- return (all_fmt & SORT_REVERSE) ? -(int)dif : (int)dif;
-}
-
-static void dnsort(struct dnode **dn, int size)
-{
- qsort(dn, size, sizeof(*dn), sortcmp);
-}
-#else
-#define dnsort(dn, size) ((void)0)
-#endif
-
-
static unsigned calc_name_len(const char *name)
{
unsigned len;
return len;
}
-
/* Return the number of used columns.
* Note that only STYLE_COLUMNAR uses return value.
* STYLE_SINGLE and STYLE_LONG don't care.
* Note that only STYLE_COLUMNAR uses return value,
* STYLE_SINGLE and STYLE_LONG don't care.
*/
-static NOINLINE unsigned list_single(const struct dnode *dn)
+static NOINLINE unsigned display_single(const struct dnode *dn)
{
unsigned column = 0;
- char *lpath = lpath; /* for compiler */
+ char *lpath;
#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
- struct stat info;
+ struct stat statbuf;
char append;
#endif
- /* Never happens:
- if (dn->fullname == NULL)
- return 0;
- */
-
#if ENABLE_FEATURE_LS_FILETYPES
- append = append_char(dn->dstat.st_mode);
+ append = append_char(dn->dn_mode);
#endif
/* Do readlink early, so that if it fails, error message
* does not appear *inside* the "ls -l" line */
- if (all_fmt & LIST_SYMLINK)
- if (S_ISLNK(dn->dstat.st_mode))
+ lpath = NULL;
+ if (G.all_fmt & LIST_SYMLINK)
+ if (S_ISLNK(dn->dn_mode))
lpath = xmalloc_readlink_or_warn(dn->fullname);
- if (all_fmt & LIST_INO)
- column += printf("%7llu ", (long long) dn->dstat.st_ino);
+ if (G.all_fmt & LIST_INO)
+ column += printf("%7llu ", (long long) dn->dn_ino);
//TODO: -h should affect -s too:
- if (all_fmt & LIST_BLOCKS)
- column += printf("%6"OFF_FMT"u ", (off_t) (dn->dstat.st_blocks >> 1));
- if (all_fmt & LIST_MODEBITS)
- column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
- if (all_fmt & LIST_NLINKS)
- column += printf("%4lu ", (long) dn->dstat.st_nlink);
- if (all_fmt & LIST_ID_NUMERIC) {
+ if (G.all_fmt & LIST_BLOCKS)
+ column += printf("%6"OFF_FMT"u ", (off_t) (dn->dn_blocks >> 1));
+ if (G.all_fmt & LIST_MODEBITS)
+ column += printf("%-10s ", (char *) bb_mode_string(dn->dn_mode));
+ if (G.all_fmt & LIST_NLINKS)
+ column += printf("%4lu ", (long) dn->dn_nlink);
+ if (G.all_fmt & LIST_ID_NUMERIC) {
if (option_mask32 & OPT_g)
- column += printf("%-8u ", (int) dn->dstat.st_gid);
+ column += printf("%-8u ", (int) dn->dn_gid);
else
column += printf("%-8u %-8u ",
- (int) dn->dstat.st_uid,
- (int) dn->dstat.st_gid);
+ (int) dn->dn_uid,
+ (int) dn->dn_gid);
}
#if ENABLE_FEATURE_LS_USERNAME
- else if (all_fmt & LIST_ID_NAME) {
+ else if (G.all_fmt & LIST_ID_NAME) {
if (option_mask32 & OPT_g) {
column += printf("%-8.8s ",
- get_cached_groupname(dn->dstat.st_gid));
+ get_cached_groupname(dn->dn_gid));
} else {
column += printf("%-8.8s %-8.8s ",
- get_cached_username(dn->dstat.st_uid),
- get_cached_groupname(dn->dstat.st_gid));
+ get_cached_username(dn->dn_uid),
+ get_cached_groupname(dn->dn_gid));
}
}
#endif
- if (all_fmt & LIST_SIZE) {
- if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
+ if (G.all_fmt & LIST_SIZE) {
+ if (S_ISBLK(dn->dn_mode) || S_ISCHR(dn->dn_mode)) {
column += printf("%4u, %3u ",
- (int) major(dn->dstat.st_rdev),
- (int) minor(dn->dstat.st_rdev));
+ dn->dn_rdev_maj,
+ dn->dn_rdev_min);
} else {
if (option_mask32 & OPT_h) {
column += printf("%"HUMAN_READABLE_MAX_WIDTH_STR"s ",
- /* print st_size, show one fractional, use suffixes */
- make_human_readable_str(dn->dstat.st_size, 1, 0)
+ /* print size, show one fractional, use suffixes */
+ make_human_readable_str(dn->dn_size, 1, 0)
);
} else {
- column += printf("%9"OFF_FMT"u ", (off_t) dn->dstat.st_size);
+ column += printf("%9"OFF_FMT"u ", dn->dn_size);
}
}
}
#if ENABLE_FEATURE_LS_TIMESTAMPS
- if (all_fmt & (LIST_FULLTIME|LIST_DATE_TIME)) {
+ if (G.all_fmt & (LIST_FULLTIME|LIST_DATE_TIME)) {
char *filetime;
- time_t ttime = dn->dstat.st_mtime;
- if (all_fmt & TIME_ACCESS)
- ttime = dn->dstat.st_atime;
- if (all_fmt & TIME_CHANGE)
- ttime = dn->dstat.st_ctime;
+ time_t ttime = dn->dn_mtime;
+ if (G.all_fmt & TIME_ACCESS)
+ ttime = dn->dn_atime;
+ if (G.all_fmt & TIME_CHANGE)
+ ttime = dn->dn_ctime;
filetime = ctime(&ttime);
/* filetime's format: "Wed Jun 30 21:49:08 1993\n" */
- if (all_fmt & LIST_FULLTIME) { /* -e */
+ if (G.all_fmt & LIST_FULLTIME) { /* -e */
/* Note: coreutils 8.4 ls --full-time prints:
* 2009-07-13 17:49:27.000000000 +0200
*/
column += printf("%.24s ", filetime);
} else { /* LIST_DATE_TIME */
- /* current_time_t ~== time(NULL) */
- time_t age = current_time_t - ttime;
+ /* G.current_time_t ~== time(NULL) */
+ time_t age = G.current_time_t - ttime;
printf("%.6s ", filetime + 4); /* "Jun 30" */
if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
/* hh:mm if less than 6 months old */
}
#endif
#if ENABLE_SELINUX
- if (all_fmt & LIST_CONTEXT) {
+ if (G.all_fmt & LIST_CONTEXT) {
column += printf("%-32s ", dn->sid ? dn->sid : "unknown");
freecon(dn->sid);
}
#endif
#if ENABLE_FEATURE_LS_COLOR
- if (show_color) {
- info.st_mode = 0; /* for fgcolor() */
- lstat(dn->fullname, &info);
- printf("\033[%u;%um", bold(info.st_mode),
- fgcolor(info.st_mode));
+ if (G_show_color) {
+ mode_t mode = dn->dn_mode_lstat;
+ if (!mode)
+ if (lstat(dn->fullname, &statbuf) == 0)
+ mode = statbuf.st_mode;
+ printf("\033[%u;%um", bold(mode), fgcolor(mode));
}
#endif
column += print_name(dn->name);
- if (show_color) {
+ if (G_show_color) {
printf("\033[0m");
}
- if (all_fmt & LIST_SYMLINK) {
- if (S_ISLNK(dn->dstat.st_mode) && lpath) {
- printf(" -> ");
+ if (lpath) {
+ printf(" -> ");
#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
-#if ENABLE_FEATURE_LS_COLOR
- info.st_mode = 0; /* for fgcolor() */
-#endif
- if (stat(dn->fullname, &info) == 0) {
- append = append_char(info.st_mode);
- }
-#endif
-#if ENABLE_FEATURE_LS_COLOR
- if (show_color) {
- printf("\033[%u;%um", bold(info.st_mode),
- fgcolor(info.st_mode));
+ if ((G.all_fmt & LIST_FILETYPE) || G_show_color) {
+ mode_t mode = dn->dn_mode_stat;
+ if (!mode)
+ if (stat(dn->fullname, &statbuf) == 0)
+ mode = statbuf.st_mode;
+# if ENABLE_FEATURE_LS_FILETYPES
+ append = append_char(mode);
+# endif
+# if ENABLE_FEATURE_LS_COLOR
+ if (G_show_color) {
+ printf("\033[%u;%um", bold(mode), fgcolor(mode));
}
+# endif
+ }
#endif
- column += print_name(lpath) + 4;
- if (show_color) {
- printf("\033[0m");
- }
- free(lpath);
+ column += print_name(lpath) + 4;
+ free(lpath);
+ if (G_show_color) {
+ printf("\033[0m");
}
}
#if ENABLE_FEATURE_LS_FILETYPES
- if (all_fmt & LIST_FILETYPE) {
+ if (G.all_fmt & LIST_FILETYPE) {
if (append) {
putchar(append);
column++;
return column;
}
-static void showfiles(struct dnode **dn, unsigned nfiles)
+static void display_files(struct dnode **dn, unsigned nfiles)
{
unsigned i, ncols, nrows, row, nc;
unsigned column;
unsigned nexttab;
unsigned column_width = 0; /* used only by STYLE_COLUMNAR */
- if (all_fmt & STYLE_LONG) { /* STYLE_LONG or STYLE_SINGLE */
+ if (G.all_fmt & STYLE_LONG) { /* STYLE_LONG or STYLE_SINGLE */
ncols = 1;
} else {
/* find the longest file name, use that as the column width */
column_width = len;
}
column_width += 1 +
- IF_SELINUX( ((all_fmt & LIST_CONTEXT) ? 33 : 0) + )
- ((all_fmt & LIST_INO) ? 8 : 0) +
- ((all_fmt & LIST_BLOCKS) ? 5 : 0);
- ncols = (int) (terminal_width / column_width);
+ IF_SELINUX( ((G.all_fmt & LIST_CONTEXT) ? 33 : 0) + )
+ ((G.all_fmt & LIST_INO) ? 8 : 0) +
+ ((G.all_fmt & LIST_BLOCKS) ? 5 : 0);
+ ncols = (unsigned)G_terminal_width / column_width;
}
if (ncols > 1) {
for (row = 0; row < nrows; row++) {
for (nc = 0; nc < ncols; nc++) {
/* reach into the array based on the column and row */
- if (all_fmt & DISP_ROWS)
+ if (G.all_fmt & DISP_ROWS)
i = (row * ncols) + nc; /* display across row */
else
i = (nc * nrows) + row; /* display by column */
column += nexttab + 1;
}
nexttab = column + column_width;
- column += list_single(dn[i]);
+ column += display_single(dn[i]);
}
}
putchar('\n');
}
-#if ENABLE_DESKTOP
-/* http://www.opengroup.org/onlinepubs/9699919799/utilities/ls.html
- * If any of the -l, -n, -s options is specified, each list
- * of files within the directory shall be preceded by a
- * status line indicating the number of file system blocks
- * occupied by files in the directory in 512-byte units if
- * the -k option is not specified, or 1024-byte units if the
- * -k option is specified, rounded up to the next integral
- * number of units.
- */
-/* by Jorgen Overgaard (jorgen AT antistaten.se) */
-static off_t calculate_blocks(struct dnode **dn)
+/*** Dir scanning code ***/
+
+static struct dnode *my_stat(const char *fullname, const char *name, int force_follow)
{
- uoff_t blocks = 1;
- if (dn) {
- while (*dn) {
- /* st_blocks is in 512 byte blocks */
- blocks += (*dn)->dstat.st_blocks;
- dn++;
+ struct stat statbuf;
+ struct dnode *cur;
+
+ cur = xzalloc(sizeof(*cur));
+ cur->fullname = fullname;
+ cur->name = name;
+
+ if ((option_mask32 & OPT_L) || force_follow) {
+#if ENABLE_SELINUX
+ if (is_selinux_enabled()) {
+ getfilecon(fullname, &cur->sid);
+ }
+#endif
+ if (stat(fullname, &statbuf)) {
+ bb_simple_perror_msg(fullname);
+ G.exit_code = EXIT_FAILURE;
+ free(cur);
+ return NULL;
+ }
+ cur->dn_mode_stat = statbuf.st_mode;
+ } else {
+#if ENABLE_SELINUX
+ if (is_selinux_enabled()) {
+ lgetfilecon(fullname, &cur->sid);
+ }
+#endif
+ if (lstat(fullname, &statbuf)) {
+ bb_simple_perror_msg(fullname);
+ G.exit_code = EXIT_FAILURE;
+ free(cur);
+ return NULL;
}
+ cur->dn_mode_lstat = statbuf.st_mode;
}
- /* Even though standard says use 512 byte blocks, coreutils use 1k */
- /* Actually, we round up by calculating (blocks + 1) / 2,
- * "+ 1" was done when we initialized blocks to 1 */
- return blocks >> 1;
-}
+ /* cur->dstat = statbuf: */
+ cur->dn_mode = statbuf.st_mode ;
+ cur->dn_size = statbuf.st_size ;
+#if ENABLE_FEATURE_LS_TIMESTAMPS || ENABLE_FEATURE_LS_SORTFILES
+ cur->dn_atime = statbuf.st_atime ;
+ cur->dn_mtime = statbuf.st_mtime ;
+ cur->dn_ctime = statbuf.st_ctime ;
#endif
+ cur->dn_ino = statbuf.st_ino ;
+ cur->dn_blocks = statbuf.st_blocks;
+ cur->dn_nlink = statbuf.st_nlink ;
+ cur->dn_uid = statbuf.st_uid ;
+ cur->dn_gid = statbuf.st_gid ;
+ cur->dn_rdev_maj = major(statbuf.st_rdev);
+ cur->dn_rdev_min = minor(statbuf.st_rdev);
+ return cur;
+}
-static struct dnode **list_dir(const char *, unsigned *);
-
-static void showdirs(struct dnode **dn, int first)
+static unsigned count_dirs(struct dnode **dn, int which)
{
- unsigned nfiles;
- unsigned dndirs;
- struct dnode **subdnp;
- struct dnode **dnd;
+ unsigned dirs, all;
+ if (!dn)
+ return 0;
+
+ dirs = all = 0;
for (; *dn; dn++) {
- if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
- if (!first)
- bb_putchar('\n');
- first = 0;
- printf("%s:\n", (*dn)->fullname);
+ const char *name;
+
+ all++;
+ if (!S_ISDIR((*dn)->dn_mode))
+ continue;
+
+ name = (*dn)->name;
+ if (which != SPLIT_SUBDIR /* if not requested to skip . / .. */
+ /* or if it's not . or .. */
+ || name[0] != '.'
+ || (name[1] && (name[1] != '.' || name[2]))
+ ) {
+ dirs++;
}
- subdnp = list_dir((*dn)->fullname, &nfiles);
-#if ENABLE_DESKTOP
- if ((all_fmt & STYLE_MASK) == STYLE_LONG)
- printf("total %"OFF_FMT"u\n", calculate_blocks(subdnp));
+ }
+ return which != SPLIT_FILE ? dirs : all - dirs;
+}
+
+/* get memory to hold an array of pointers */
+static struct dnode **dnalloc(unsigned num)
+{
+ if (num < 1)
+ return NULL;
+
+ num++; /* so that we have terminating NULL */
+ return xzalloc(num * sizeof(struct dnode *));
+}
+
+#if ENABLE_FEATURE_LS_RECURSIVE
+static void dfree(struct dnode **dnp)
+{
+ unsigned i;
+
+ if (dnp == NULL)
+ return;
+
+ for (i = 0; dnp[i]; i++) {
+ struct dnode *cur = dnp[i];
+ if (cur->fname_allocated)
+ free((char*)cur->fullname);
+ free(cur);
+ }
+ free(dnp);
+}
+#else
+#define dfree(...) ((void)0)
#endif
- if (nfiles > 0) {
- /* list all files at this level */
- dnsort(subdnp, nfiles);
- showfiles(subdnp, nfiles);
- if (ENABLE_FEATURE_LS_RECURSIVE
- && (all_fmt & DISP_RECURSIVE)
+
+/* Returns NULL-terminated malloced vector of pointers (or NULL) */
+static struct dnode **splitdnarray(struct dnode **dn, int which)
+{
+ unsigned dncnt, d;
+ struct dnode **dnp;
+
+ if (dn == NULL)
+ return NULL;
+
+ /* count how many dirs or files there are */
+ dncnt = count_dirs(dn, which);
+
+ /* allocate a file array and a dir array */
+ dnp = dnalloc(dncnt);
+
+ /* copy the entrys into the file or dir array */
+ for (d = 0; *dn; dn++) {
+ if (S_ISDIR((*dn)->dn_mode)) {
+ const char *name;
+
+ if (which == SPLIT_FILE)
+ continue;
+
+ name = (*dn)->name;
+ if ((which & SPLIT_DIR) /* any dir... */
+ /* ... or not . or .. */
+ || name[0] != '.'
+ || (name[1] && (name[1] != '.' || name[2]))
) {
- /* recursive - list the sub-dirs */
- dnd = splitdnarray(subdnp, SPLIT_SUBDIR);
- dndirs = count_dirs(subdnp, SPLIT_SUBDIR);
- if (dndirs > 0) {
- dnsort(dnd, dndirs);
- showdirs(dnd, 0);
- /* free the array of dnode pointers to the dirs */
- free(dnd);
- }
+ dnp[d++] = *dn;
}
- /* free the dnodes and the fullname mem */
- dfree(subdnp);
+ } else
+ if (which == SPLIT_FILE) {
+ dnp[d++] = *dn;
}
}
+ return dnp;
}
+#if ENABLE_FEATURE_LS_SORTFILES
+static int sortcmp(const void *a, const void *b)
+{
+ struct dnode *d1 = *(struct dnode **)a;
+ struct dnode *d2 = *(struct dnode **)b;
+ unsigned sort_opts = G.all_fmt & SORT_MASK;
+ off_t dif;
+
+ dif = 0; /* assume SORT_NAME */
+ // TODO: use pre-initialized function pointer
+ // instead of branch forest
+ if (sort_opts == SORT_SIZE) {
+ dif = (d2->dn_size - d1->dn_size);
+ } else
+ if (sort_opts == SORT_ATIME) {
+ dif = (d2->dn_atime - d1->dn_atime);
+ } else
+ if (sort_opts == SORT_CTIME) {
+ dif = (d2->dn_ctime - d1->dn_ctime);
+ } else
+ if (sort_opts == SORT_MTIME) {
+ dif = (d2->dn_mtime - d1->dn_mtime);
+ } else
+ if (sort_opts == SORT_DIR) {
+ dif = S_ISDIR(d2->dn_mode) - S_ISDIR(d1->dn_mode);
+ } else
+#if defined(HAVE_STRVERSCMP) && HAVE_STRVERSCMP == 1
+ if (sort_opts == SORT_VERSION) {
+ dif = strverscmp(d1->name, d2->name);
+ } else
+#endif
+ if (sort_opts == SORT_EXT) {
+ dif = strcmp(strchrnul(d1->name, '.'), strchrnul(d2->name, '.'));
+ }
+ if (dif == 0) {
+ /* sort by name, use as tie breaker for other sorts */
+ if (ENABLE_LOCALE_SUPPORT)
+ dif = strcoll(d1->name, d2->name);
+ else
+ dif = strcmp(d1->name, d2->name);
+ }
+
+ /* Make dif fit into an int */
+ if (sizeof(dif) > sizeof(int)) {
+ enum { BITS_TO_SHIFT = 8 * (sizeof(dif) - sizeof(int)) };
+ /* shift leaving only "int" worth of bits */
+ if (dif != 0) {
+ dif = 1 | (int)((uoff_t)dif >> BITS_TO_SHIFT);
+ }
+ }
+
+ return (G.all_fmt & SORT_REVERSE) ? -(int)dif : (int)dif;
+}
+
+static void dnsort(struct dnode **dn, int size)
+{
+ qsort(dn, size, sizeof(*dn), sortcmp);
+}
+
+static void sort_and_display_files(struct dnode **dn, unsigned nfiles)
+{
+ dnsort(dn, nfiles);
+ display_files(dn, nfiles);
+}
+#else
+# define dnsort(dn, size) ((void)0)
+# define sort_and_display_files(dn, nfiles) display_files(dn, nfiles)
+#endif
/* Returns NULL-terminated malloced vector of pointers (or NULL) */
-static struct dnode **list_dir(const char *path, unsigned *nfiles_p)
+static struct dnode **scan_one_dir(const char *path, unsigned *nfiles_p)
{
struct dnode *dn, *cur, **dnp;
struct dirent *entry;
DIR *dir;
unsigned i, nfiles;
- /* Never happens:
- if (path == NULL)
- return NULL;
- */
-
*nfiles_p = 0;
dir = warn_opendir(path);
if (dir == NULL) {
- exit_code = EXIT_FAILURE;
+ G.exit_code = EXIT_FAILURE;
return NULL; /* could not open the dir */
}
dn = NULL;
/* are we going to list the file- it may be . or .. or a hidden file */
if (entry->d_name[0] == '.') {
if ((!entry->d_name[1] || (entry->d_name[1] == '.' && !entry->d_name[2]))
- && !(all_fmt & DISP_DOT)
+ && !(G.all_fmt & DISP_DOT)
) {
continue;
}
- if (!(all_fmt & DISP_HIDDEN))
+ if (!(G.all_fmt & DISP_HIDDEN))
continue;
}
fullname = concat_path_file(path, entry->d_name);
continue;
}
cur->fname_allocated = 1;
- cur->next = dn;
+ cur->dn_next = dn;
dn = cur;
nfiles++;
}
dnp = dnalloc(nfiles);
for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
dnp[i] = dn; /* save pointer to node in array */
- dn = dn->next;
+ dn = dn->dn_next;
if (!dn)
break;
}
return dnp;
}
+#if ENABLE_DESKTOP
+/* http://www.opengroup.org/onlinepubs/9699919799/utilities/ls.html
+ * If any of the -l, -n, -s options is specified, each list
+ * of files within the directory shall be preceded by a
+ * status line indicating the number of file system blocks
+ * occupied by files in the directory in 512-byte units if
+ * the -k option is not specified, or 1024-byte units if the
+ * -k option is specified, rounded up to the next integral
+ * number of units.
+ */
+/* by Jorgen Overgaard (jorgen AT antistaten.se) */
+static off_t calculate_blocks(struct dnode **dn)
+{
+ uoff_t blocks = 1;
+ if (dn) {
+ while (*dn) {
+ /* st_blocks is in 512 byte blocks */
+ blocks += (*dn)->dn_blocks;
+ dn++;
+ }
+ }
+
+ /* Even though standard says use 512 byte blocks, coreutils use 1k */
+ /* Actually, we round up by calculating (blocks + 1) / 2,
+ * "+ 1" was done when we initialized blocks to 1 */
+ return blocks >> 1;
+}
+#endif
+
+static void scan_and_display_dirs_recur(struct dnode **dn, int first)
+{
+ unsigned nfiles;
+ struct dnode **subdnp;
+
+ for (; *dn; dn++) {
+ if (G.all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
+ if (!first)
+ bb_putchar('\n');
+ first = 0;
+ printf("%s:\n", (*dn)->fullname);
+ }
+ subdnp = scan_one_dir((*dn)->fullname, &nfiles);
+#if ENABLE_DESKTOP
+ if ((G.all_fmt & STYLE_MASK) == STYLE_LONG)
+ printf("total %"OFF_FMT"u\n", calculate_blocks(subdnp));
+#endif
+ if (nfiles > 0) {
+ /* list all files at this level */
+ sort_and_display_files(subdnp, nfiles);
+
+ if (ENABLE_FEATURE_LS_RECURSIVE
+ && (G.all_fmt & DISP_RECURSIVE)
+ ) {
+ struct dnode **dnd;
+ unsigned dndirs;
+ /* recursive - list the sub-dirs */
+ dnd = splitdnarray(subdnp, SPLIT_SUBDIR);
+ dndirs = count_dirs(subdnp, SPLIT_SUBDIR);
+ if (dndirs > 0) {
+ dnsort(dnd, dndirs);
+ scan_and_display_dirs_recur(dnd, 0);
+ /* free the array of dnode pointers to the dirs */
+ free(dnd);
+ }
+ }
+ /* free the dnodes and the fullname mem */
+ dfree(subdnp);
+ }
+ }
+}
+
int ls_main(int argc UNUSED_PARAM, char **argv)
{
init_unicode();
if (ENABLE_FEATURE_LS_SORTFILES)
- all_fmt = SORT_NAME;
+ G.all_fmt = SORT_NAME;
#if ENABLE_FEATURE_AUTOWIDTH
/* obtain the terminal width */
- get_terminal_width_height(STDIN_FILENO, &terminal_width, NULL);
+ get_terminal_width_height(STDIN_FILENO, &G_terminal_width, NULL);
/* go one less... */
- terminal_width--;
+ G_terminal_width--;
#endif
/* process options */
IF_FEATURE_LS_COLOR(applet_long_options = ls_longopts;)
opt_complementary =
/* -e implies -l */
- "el"
+ IF_FEATURE_LS_TIMESTAMPS("el")
/* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html:
* in some pairs of opts, only last one takes effect:
*/
":C-xl:x-Cl:l-xC" /* bycols/bylines/long */
":C-1:1-C" /* bycols/oneline */
":x-1:1-x" /* bylines/oneline (not in SuS, but in GNU coreutils 8.4) */
- ":c-u:u-c" /* mtime/atime */
+ IF_FEATURE_LS_TIMESTAMPS(":c-u:u-c") /* mtime/atime */
/* -w NUM: */
IF_FEATURE_AUTOWIDTH(":w+");
opt = getopt32(argv, ls_options
- IF_FEATURE_AUTOWIDTH(, NULL, &terminal_width)
+ IF_FEATURE_AUTOWIDTH(, NULL, &G_terminal_width)
IF_FEATURE_LS_COLOR(, &color_opt)
);
for (i = 0; opt_flags[i] != (1U << 31); i++) {
uint32_t flags = opt_flags[i];
if (flags & STYLE_MASK)
- all_fmt &= ~STYLE_MASK;
+ G.all_fmt &= ~STYLE_MASK;
if (flags & SORT_MASK)
- all_fmt &= ~SORT_MASK;
+ G.all_fmt &= ~SORT_MASK;
if (flags & TIME_MASK)
- all_fmt &= ~TIME_MASK;
+ G.all_fmt &= ~TIME_MASK;
- all_fmt |= flags;
+ G.all_fmt |= flags;
}
}
#if ENABLE_FEATURE_LS_COLOR
- /* set show_color = 1/0 */
+ /* set G_show_color = 1/0 */
if (ENABLE_FEATURE_LS_COLOR_IS_DEFAULT && isatty(STDOUT_FILENO)) {
char *p = getenv("LS_COLORS");
/* LS_COLORS is unset, or (not empty && not "none") ? */
if (!p || (p[0] && strcmp(p, "none") != 0))
- show_color = 1;
+ G_show_color = 1;
}
if (opt & OPT_color) {
if (color_opt[0] == 'n')
- show_color = 0;
+ G_show_color = 0;
else switch (index_in_substrings(color_str, color_opt)) {
case 3:
case 4:
case 0:
case 1:
case 2:
- show_color = 1;
+ G_show_color = 1;
}
}
}
#endif
/* sort out which command line options take precedence */
- if (ENABLE_FEATURE_LS_RECURSIVE && (all_fmt & DISP_NOLIST))
- all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
+ if (ENABLE_FEATURE_LS_RECURSIVE && (G.all_fmt & DISP_NOLIST))
+ G.all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
- if (all_fmt & TIME_CHANGE)
- all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
- if (all_fmt & TIME_ACCESS)
- all_fmt = (all_fmt & ~SORT_MASK) | SORT_ATIME;
+ if (G.all_fmt & TIME_CHANGE)
+ G.all_fmt = (G.all_fmt & ~SORT_MASK) | SORT_CTIME;
+ if (G.all_fmt & TIME_ACCESS)
+ G.all_fmt = (G.all_fmt & ~SORT_MASK) | SORT_ATIME;
}
- if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* not -l? */
- all_fmt &= ~(LIST_ID_NUMERIC|LIST_ID_NAME|LIST_FULLTIME);
+ if ((G.all_fmt & STYLE_MASK) != STYLE_LONG) /* not -l? */
+ G.all_fmt &= ~(LIST_ID_NUMERIC|LIST_ID_NAME|LIST_FULLTIME);
/* choose a display format if one was not already specified by an option */
- if (!(all_fmt & STYLE_MASK))
- all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNAR : STYLE_SINGLE);
+ if (!(G.all_fmt & STYLE_MASK))
+ G.all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNAR : STYLE_SINGLE);
argv += optind;
if (!argv[0])
*--argv = (char*)".";
if (argv[1])
- all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
+ G.all_fmt |= DISP_DIRNAME; /* 2 or more items? label directories */
/* stuff the command line file names into a dnode array */
dn = NULL;
do {
cur = my_stat(*argv, *argv,
/* follow links on command line unless -l, -s or -F: */
- !((all_fmt & STYLE_MASK) == STYLE_LONG
- || (all_fmt & LIST_BLOCKS)
+ !((G.all_fmt & STYLE_MASK) == STYLE_LONG
+ || (G.all_fmt & LIST_BLOCKS)
|| (option_mask32 & OPT_F)
)
/* ... or if -H: */
|| (option_mask32 & OPT_H)
+ /* ... or if -L, but my_stat always follows links if -L */
);
argv++;
if (!cur)
continue;
- cur->fname_allocated = 0;
- cur->next = dn;
+ /*cur->fname_allocated = 0; - already is */
+ cur->dn_next = dn;
dn = cur;
nfiles++;
} while (*argv);
/* nfiles _may_ be 0 here - try "ls doesnt_exist" */
if (nfiles == 0)
- return exit_code;
+ return G.exit_code;
/* now that we know how many files there are
* allocate memory for an array to hold dnode pointers
dnp = dnalloc(nfiles);
for (i = 0; /* i < nfiles - detected via !dn below */; i++) {
dnp[i] = dn; /* save pointer to node in array */
- dn = dn->next;
+ dn = dn->dn_next;
if (!dn)
break;
}
- if (all_fmt & DISP_NOLIST) {
- dnsort(dnp, nfiles);
- showfiles(dnp, nfiles);
+ if (G.all_fmt & DISP_NOLIST) {
+ sort_and_display_files(dnp, nfiles);
} else {
dnd = splitdnarray(dnp, SPLIT_DIR);
dnf = splitdnarray(dnp, SPLIT_FILE);
dndirs = count_dirs(dnp, SPLIT_DIR);
dnfiles = nfiles - dndirs;
if (dnfiles > 0) {
- dnsort(dnf, dnfiles);
- showfiles(dnf, dnfiles);
+ sort_and_display_files(dnf, dnfiles);
if (ENABLE_FEATURE_CLEAN_UP)
free(dnf);
}
if (dndirs > 0) {
dnsort(dnd, dndirs);
- showdirs(dnd, dnfiles == 0);
+ scan_and_display_dirs_recur(dnd, dnfiles == 0);
if (ENABLE_FEATURE_CLEAN_UP)
free(dnd);
}
}
+
if (ENABLE_FEATURE_CLEAN_UP)
dfree(dnp);
- return exit_code;
+ return G.exit_code;
}
projects / platform / upstream / busybox.git / blobdiff