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sbase/ls.c
FRIGN 5595af5742 Convert humansize() to accept a size_t instead of a double 
General convention is to use size_t to store sizes of all kinds.
Internally, the function uses double anyway, but at least this
doesn't clobber up the API any more and there's a chance in the
future to make this function a bit cleaner and not use this dirty
static buffer hack any more.
2015-04-25 11:43:14 +01:00

370 lines
7.1 KiB
C
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/* See LICENSE file for copyright and license details. */
#include <sys/stat.h>
#include <dirent.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "utf.h"
#include "util.h"
struct entry {
char *name;
mode_t mode, tmode;
nlink_t nlink;
uid_t uid;
gid_t gid;
off_t size;
time_t t;
ino_t ino;
};
static int Aflag = 0;
static int aflag = 0;
static int cflag = 0;
static int dflag = 0;
static int Fflag = 0;
static int fflag = 0;
static int Hflag = 0;
static int hflag = 0;
static int iflag = 0;
static int Lflag = 0;
static int lflag = 0;
static int nflag = 0;
static int pflag = 0;
static int qflag = 0;
static int Rflag = 0;
static int Sflag = 0;
static int rflag = 0;
static int tflag = 0;
static int Uflag = 0;
static int uflag = 0;
static int first = 1;
static int many;
static void ls(const struct entry *ent, int recurse);
static void
mkent(struct entry *ent, char *path, int dostat, int follow)
{
struct stat st;
ent->name = path;
if (!dostat)
return;
if ((follow ? stat : lstat)(path, &st) < 0)
eprintf("%s %s:", follow ? "stat" : "lstat", path);
ent->mode = st.st_mode;
ent->nlink = st.st_nlink;
ent->uid = st.st_uid;
ent->gid = st.st_gid;
ent->size = st.st_size;
if (cflag)
ent->t = st.st_ctime;
else if (uflag)
ent->t = st.st_atime;
else
ent->t = st.st_mtime;
ent->ino = st.st_ino;
if (S_ISLNK(ent->mode))
ent->tmode = stat(path, &st) == 0 ? st.st_mode : 0;
}
static char *
indicator(mode_t mode)
{
if (pflag || Fflag)
if (S_ISDIR(mode))
return "/";
if (Fflag) {
if (S_ISLNK(mode))
return "@";
else if (S_ISFIFO(mode))
return "|";
else if (S_ISSOCK(mode))
return "=";
else if (mode & S_IXUSR || mode & S_IXGRP || mode & S_IXOTH)
return "*";
}
return "";
}
static void
output(const struct entry *ent)
{
struct group *gr;
struct passwd *pw;
ssize_t len;
char buf[BUFSIZ], *fmt,
pwname[_SC_LOGIN_NAME_MAX], grname[_SC_LOGIN_NAME_MAX],
mode[] = "----------";
if (iflag)
printf("%lu ", (unsigned long)ent->ino);
if (!lflag) {
printf("%s%s\n", ent->name, indicator(ent->mode));
return;
}
if (S_ISREG(ent->mode))
mode[0] = '-';
else if (S_ISBLK(ent->mode))
mode[0] = 'b';
else if (S_ISCHR(ent->mode))
mode[0] = 'c';
else if (S_ISDIR(ent->mode))
mode[0] = 'd';
else if (S_ISFIFO(ent->mode))
mode[0] = 'p';
else if (S_ISLNK(ent->mode))
mode[0] = 'l';
else if (S_ISSOCK(ent->mode))
mode[0] = 's';
else
mode[0] = '?';
if (ent->mode & S_IRUSR) mode[1] = 'r';
if (ent->mode & S_IWUSR) mode[2] = 'w';
if (ent->mode & S_IXUSR) mode[3] = 'x';
if (ent->mode & S_IRGRP) mode[4] = 'r';
if (ent->mode & S_IWGRP) mode[5] = 'w';
if (ent->mode & S_IXGRP) mode[6] = 'x';
if (ent->mode & S_IROTH) mode[7] = 'r';
if (ent->mode & S_IWOTH) mode[8] = 'w';
if (ent->mode & S_IXOTH) mode[9] = 'x';
if (ent->mode & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
if (ent->mode & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
if (ent->mode & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
if (!nflag && (pw = getpwuid(ent->uid)))
snprintf(pwname, LEN(pwname), "%s", pw->pw_name);
else
snprintf(pwname, LEN(pwname), "%d", ent->uid);
if (!nflag && (gr = getgrgid(ent->gid)))
snprintf(grname, LEN(grname), "%s", gr->gr_name);
else
snprintf(grname, LEN(grname), "%d", ent->gid);
if (time(NULL) > ent->t + (180 * 24 * 60 * 60)) /* 6 months ago? */
fmt = "%b %d %Y";
else
fmt = "%b %d %H:%M";
strftime(buf, sizeof(buf), fmt, localtime(&ent->t));
printf("%s %4ld %-8.8s %-8.8s ", mode, (long)ent->nlink, pwname, grname);
if (hflag)
printf("%10s ", humansize(ent->size));
else
printf("%10lu ", (unsigned long)ent->size);
printf("%s %s%s", buf, ent->name, indicator(ent->mode));
if (S_ISLNK(ent->mode)) {
if ((len = readlink(ent->name, buf, sizeof(buf) - 1)) < 0)
eprintf("readlink %s:", ent->name);
buf[len] = '\0';
printf(" -> %s%s", buf, indicator(ent->tmode));
}
putchar('\n');
}
static int
entcmp(const void *va, const void *vb)
{
int cmp = 0;
const struct entry *a = va, *b = vb;
if (Sflag)
cmp = b->size - a->size;
else if (tflag)
cmp = b->t - a->t;
return cmp ? cmp : strcmp(a->name, b->name);
}
static void
lsdir(const char *path)
{
DIR *dp;
Rune r;
struct entry ent, *ents = NULL;
struct dirent *d;
size_t i, n = 0, len;
char cwd[PATH_MAX], *p, *q, *name;
if (!getcwd(cwd, sizeof(cwd)))
eprintf("getcwd:");
if (!(dp = opendir(path)))
eprintf("opendir %s:", path);
if (chdir(path) < 0)
eprintf("chdir %s:", path);
if (many || Rflag) {
if (!first)
putchar('\n');
printf("%s:\n", path);
}
first = 0;
while ((d = readdir(dp))) {
if (d->d_name[0] == '.' && !aflag && !Aflag)
continue;
else if (Aflag)
if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0)
continue;
if (Uflag){
mkent(&ent, d->d_name, Fflag || lflag || pflag || iflag || Rflag, Lflag);
ls(&ent, Rflag);
} else {
ents = ereallocarray(ents, ++n, sizeof(*ents));
name = p = estrdup(d->d_name);
if (qflag) {
q = d->d_name;
while (*q) {
len = chartorune(&r, q);
if (isprintrune(r)) {
memcpy(p, q, len);
p += len, q += len;
} else {
*p++ = '?';
q += len;
}
}
*p = '\0';
}
mkent(&ents[n - 1], name, tflag || Fflag || iflag || lflag || pflag || Rflag, Lflag);
}
}
closedir(dp);
if (!Uflag){
qsort(ents, n, sizeof(*ents), entcmp);
for (i = 0; i < n; i++) {
ls(&ents[rflag ? (n - i - 1) : i], Rflag);
free(ents[rflag ? (n - i - 1) : i].name);
}
}
if (chdir(cwd) < 0)
eprintf("chdir %s:", cwd);
free(ents);
}
static void
ls(const struct entry *ent, int recurse)
{
if (recurse && (S_ISDIR(ent->mode) || (S_ISLNK(ent->mode) &&
S_ISDIR(ent->tmode) && !Fflag && !lflag)) && !dflag)
lsdir(ent->name);
else
output(ent);
}
static void
usage(void)
{
eprintf("usage: %s [-1AacdFHhiLlqRrtUu] [file ...]\n", argv0);
}
int
main(int argc, char *argv[])
{
struct entry *ents;
size_t i;
ARGBEGIN {
case '1':
/* ignore */
break;
case 'A':
Aflag = 1;
break;
case 'a':
aflag = 1;
break;
case 'c':
cflag = 1;
uflag = 0;
break;
case 'd':
dflag = 1;
break;
case 'f':
aflag = 1;
fflag = 1;
Uflag = 1;
break;
case 'F':
Fflag = 1;
break;
case 'H':
Hflag = 1;
break;
case 'h':
hflag = 1;
break;
case 'i':
iflag = 1;
break;
case 'L':
Lflag = 1;
break;
case 'l':
lflag = 1;
break;
case 'n':
lflag = 1;
nflag = 1;
break;
case 'p':
pflag = 1;
break;
case 'q':
qflag = 1;
break;
case 'R':
Rflag = 1;
break;
case 'r':
if (!fflag)
rflag = 1;
break;
case 'S':
Sflag = 1;
tflag = 0;
break;
case 't':
Sflag = 0;
tflag = 1;
break;
case 'U':
Uflag = 1;
break;
case 'u':
uflag = 1;
cflag = 0;
break;
default:
usage();
} ARGEND;
many = (argc > 1);
if (argc == 0)
*--argv = ".", argc++;
ents = ereallocarray(NULL, argc, sizeof(*ents));
for (i = 0; i < argc; i++)
mkent(&ents[i], argv[i], 1, Hflag || Lflag);
qsort(ents, argc, sizeof(*ents), entcmp);
for (i = 0; i < argc; i++)
ls(&ents[rflag ? argc-i-1 : i], 1);
return fshut(stdout, "<stdout>");
}
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