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authorDenys Vlasenko <vda.linux@googlemail.com>2011-05-13 15:28:46 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2011-05-13 15:28:46 (GMT)
commit4029e21b37a18bea86dd438d4a9138789ecdce6c (patch)
tree4e23c08d7fab2bb2a62959c313b0cc081f09a0f3
parent2a81639534bcfd075dee12eacc6c45e657e4488e (diff)
downloadbusybox-4029e21b37a18bea86dd438d4a9138789ecdce6c.tar.gz
busybox-4029e21b37a18bea86dd438d4a9138789ecdce6c.tar.bz2
ls: reorder and rename functions. No code changes
function old new delta display_single - 931 +931 scan_and_display_dirs_recur - 497 +497 display_files - 422 +422 showfiles 422 - -422 showdirs 497 - -497 list_single 931 - -931 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 0/0 up/down: 1850/-1850) Total: 0 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--coreutils/ls.c478
1 files changed, 240 insertions, 238 deletions
diff --git a/coreutils/ls.c b/coreutils/ls.c
index 52c2c4d..9079550 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -326,7 +326,7 @@ struct dnode {
// (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
+// 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 */
@@ -376,61 +376,8 @@ struct globals {
} while (0)
-static struct dnode *my_stat(const char *fullname, const char *name, int force_follow)
-{
- struct stat statbuf;
- struct dnode *cur;
+/*** Output code ***/
- 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;
- }
-
- /* 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;
-}
/* 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
@@ -493,155 +440,6 @@ static char append_char(mode_t mode)
}
#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)->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++;
- }
- }
- 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)->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]))
- ) {
- dnp[d++] = *dn;
- }
- } 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 (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 (G.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;
@@ -664,7 +462,6 @@ static unsigned calc_name_len(const char *name)
return len;
}
-
/* Return the number of used columns.
* Note that only STYLE_COLUMNAR uses return value.
* STYLE_SINGLE and STYLE_LONG don't care.
@@ -703,7 +500,7 @@ static unsigned print_name(const char *name)
* 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;
@@ -854,7 +651,7 @@ static NOINLINE unsigned list_single(const struct dnode *dn)
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;
@@ -902,7 +699,7 @@ static void showfiles(struct dnode **dn, unsigned nfiles)
column += nexttab + 1;
}
nexttab = column + column_width;
- column += list_single(dn[i]);
+ column += display_single(dn[i]);
}
}
putchar('\n');
@@ -911,38 +708,214 @@ static void showfiles(struct dnode **dn, unsigned nfiles)
}
-#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)->dn_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 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)->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++;
+ }
+ }
+ 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)->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]))
+ ) {
+ dnp[d++] = *dn;
+ }
+ } 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 (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 (G.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
/* 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;
@@ -1001,8 +974,36 @@ static struct dnode **list_dir(const char *path, unsigned *nfiles_p)
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 showdirs(struct dnode **dn, int first)
+static void scan_and_display_dirs_recur(struct dnode **dn, int first)
{
unsigned nfiles;
struct dnode **subdnp;
@@ -1014,7 +1015,7 @@ static void showdirs(struct dnode **dn, int first)
first = 0;
printf("%s:\n", (*dn)->fullname);
}
- subdnp = list_dir((*dn)->fullname, &nfiles);
+ 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));
@@ -1022,7 +1023,8 @@ static void showdirs(struct dnode **dn, int first)
if (nfiles > 0) {
/* list all files at this level */
dnsort(subdnp, nfiles);
- showfiles(subdnp, nfiles);
+ display_files(subdnp, nfiles);
+
if (ENABLE_FEATURE_LS_RECURSIVE
&& (G.all_fmt & DISP_RECURSIVE)
) {
@@ -1033,7 +1035,7 @@ static void showdirs(struct dnode **dn, int first)
dndirs = count_dirs(subdnp, SPLIT_SUBDIR);
if (dndirs > 0) {
dnsort(dnd, dndirs);
- showdirs(dnd, 0);
+ scan_and_display_dirs_recur(dnd, 0);
/* free the array of dnode pointers to the dirs */
free(dnd);
}
@@ -1215,7 +1217,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
if (G.all_fmt & DISP_NOLIST) {
dnsort(dnp, nfiles);
- showfiles(dnp, nfiles);
+ display_files(dnp, nfiles);
} else {
dnd = splitdnarray(dnp, SPLIT_DIR);
dnf = splitdnarray(dnp, SPLIT_FILE);
@@ -1223,13 +1225,13 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
dnfiles = nfiles - dndirs;
if (dnfiles > 0) {
dnsort(dnf, dnfiles);
- showfiles(dnf, dnfiles);
+ 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);
}