Initial commit of ubase - the ugly/unportable base

This commit is contained in:
sin 2013-08-06 12:16:27 +01:00
commit 987ec1ef09
11 changed files with 403 additions and 0 deletions

21
LICENSE Normal file
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MIT/X Consortium License
© 2013 sin <sin@2f30.org>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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Makefile Normal file
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include config.mk
.POSIX:
.SUFFIXES: .c .o
HDR = util.h arg.h ubase.h
LIB = \
$(OS)/grabmntinfo.o \
util/eprintf.o \
util/estrtol.o
SRC = \
df.c
OBJ = $(SRC:.c=.o) $(LIB)
BIN = $(SRC:.c=)
MAN = $(SRC:.c=.1)
all: binlib
binlib: util.a
$(MAKE) bin
bin: $(BIN)
$(OBJ): util.h config.mk
.o:
@echo LD $@
@$(LD) -o $@ $< util.a $(LDFLAGS)
.c.o:
@echo CC $<
@$(CC) -c -o $@ $< $(CFLAGS)
util.a: $(LIB)
@echo AR $@
@$(AR) -r -c $@ $(LIB)
@ranlib $@
install: all
@echo installing executables to $(DESTDIR)$(PREFIX)/bin
@mkdir -p $(DESTDIR)$(PREFIX)/bin
@cp -f $(BIN) $(DESTDIR)$(PREFIX)/bin
@cd $(DESTDIR)$(PREFIX)/bin && chmod 755 $(BIN)
@echo installing manual pages to $(DESTDIR)$(MANPREFIX)/man1
@mkdir -p $(DESTDIR)$(MANPREFIX)/man1
@cp -f $(MAN) $(DESTDIR)$(MANPREFIX)/man1
@cd $(DESTDIR)$(MANPREFIX)/man1 && chmod 644 $(MAN)
uninstall:
@echo removing executables from $(DESTDIR)$(PREFIX)/bin
@cd $(DESTDIR)$(PREFIX)/bin && rm -f $(BIN)
@echo removing manual pages from $(DESTDIR)$(MANPREFIX)/man1
@cd $(DESTDIR)$(MANPREFIX)/man1 && rm -f $(MAN)
dist: clean
@echo creating dist tarball
@mkdir -p ubase-$(VERSION)
@cp -r LICENSE Makefile config.mk $(SRC) $(MAN) util $(HDR) ubase-$(VERSION)
@tar -cf ubase-$(VERSION).tar ubase-$(VERSION)
@gzip ubase-$(VERSION).tar
@rm -rf ubase-$(VERSION)
ubase-box: $(SRC) util.a
@echo creating box binary
@mkdir -p build
@cp $(HDR) build
@for f in $(SRC); do sed "s/^main(/`basename $$f .c`_&/" < $$f > build/$$f; done
@echo '#include <libgen.h>' > build/$@.c
@echo '#include <stdlib.h>' >> build/$@.c
@echo '#include <string.h>' >> build/$@.c
@echo '#include "util.h"' >> build/$@.c
@for f in $(SRC); do echo "int `basename $$f .c`_main(int, char **);" >> build/$@.c; done
@echo 'int main(int argc, char *argv[]) { char *s = basename(argv[0]); if(0) ;' >> build/$@.c
@for f in $(SRC); do echo "else if(!strcmp(s, \"`basename $$f .c`\")) `basename $$f .c`_main(argc, argv);" >> build/$@.c; done
@printf 'else eprintf("%%s: unknown program\\n", s); return EXIT_SUCCESS; }\n' >> build/$@.c
@echo LD $@
@$(LD) -o $@ build/*.c util.a $(CFLAGS) $(LDFLAGS)
@rm -r build
clean:
@echo cleaning
@rm -f $(BIN) $(OBJ) $(LIB) util.a ubase-box

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arg.h Normal file
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/*
* Copy me if you can.
* by 20h
*/
#ifndef __ARG_H__
#define __ARG_H__
extern char *argv0;
#define USED(x) ((void)(x))
/* use main(int argc, char *argv[]) */
#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
argv[0] && argv[0][1]\
&& argv[0][0] == '-';\
argc--, argv++) {\
char _argc;\
char **_argv;\
int brk;\
if (argv[0][1] == '-' && argv[0][2] == '\0') {\
argv++;\
argc--;\
break;\
}\
for (brk = 0, argv[0]++, _argv = argv;\
argv[0][0] && !brk;\
argv[0]++) {\
if (_argv != argv)\
break;\
_argc = argv[0][0];\
switch (_argc)
#define ARGEND }\
USED(_argc);\
}\
USED(argv);\
USED(argc);
#define ARGC() _argc
#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
((x), abort(), (char *)0) :\
(brk = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
(char *)0 :\
(brk = 1, (argv[0][1] != '\0')?\
(&argv[0][1]) :\
(argc--, argv++, argv[0])))
#endif

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config.mk Normal file
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# ubase version
VERSION = 0.0
# paths
PREFIX = /usr/local
MANPREFIX = $(PREFIX)/share/man
# OS to build against
OS = linux
#OS = openbsd
#CC = gcc
#CC = musl-gcc
LD = $(CC)
CPPFLAGS = -D_BSD_SOURCE -D_GNU_SOURCE
CFLAGS = -g -ansi -Wall -Wno-long-long -pedantic $(CPPFLAGS)
LDFLAGS = -g
#CC = tcc
#LD = $(CC)
#CPPFLAGS = -D_POSIX_C_SOURCE=200112L
#CFLAGS = -Os -Wall $(CPPFLAGS)
#LDFLAGS =

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df.c Normal file
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/* See LICENSE file for copyright and license details. */
#include <sys/statvfs.h>
#include <stdio.h>
#include <stdlib.h>
#include "ubase.h"
#include "util.h"
static void mnt_show(const char *fsname, const char *dir);
static void
usage(void)
{
eprintf("usage: %s\n", argv0);
}
int
main(int argc, char *argv[])
{
struct mntinfo *minfo = NULL;
int siz, i;
ARGBEGIN {
case 'a':
break;
case 's':
case 'h':
case 'i':
eprintf("not implemented\n");
default:
usage();
} ARGEND;
printf("Filesystem 512-blocks Used Avail Capacity Mounted on\n");
siz = grabmntinfo(&minfo);
if (!siz)
eprintf("grabmntinfo:");
for (i = 0; i < siz; i++)
mnt_show(minfo[i].fsname, minfo[i].mntdir);
free(minfo);
return 0;
}
static void
mnt_show(const char *fsname, const char *dir)
{
struct statvfs s;
unsigned long long total, used, avail;
int capacity = 0;
int bs;
statvfs(dir, &s);
bs = s.f_frsize / 512;
total = s.f_blocks * bs;
avail = s.f_bfree * bs;
used = total - avail;
if (used + avail) {
capacity = (used * 100) / (used + avail);
if (used * 100 != capacity * (used + avail))
capacity++;
}
printf("%-12s %9llu %9llu %9llu %7d%% %s\n",
fsname, total, used, avail, capacity,
dir);
}

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linux/grabmntinfo.c Normal file
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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mntent.h>
#include "../ubase.h"
#include "../util.h"
int
grabmntinfo(struct mntinfo **minfo)
{
struct mntent *me;
struct mntinfo *mi = NULL;
int siz = 0;
FILE *fp;
fp = setmntent("/proc/mounts", "r");
if (!fp)
eprintf("setmntent:");
while ((me = getmntent(fp))) {
mi = realloc(mi, (siz + 1) * sizeof(*mi));
if (!mi)
eprintf("realloc:");
mi[siz].fsname = strdup(me->mnt_fsname);
mi[siz].mntdir = strdup(me->mnt_dir);
siz++;
}
endmntent(fp);
*minfo = mi;
return siz;
}

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openbsd/grabmntinfo.c Normal file
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/* See LICENSE file for copyright and license details. */
#include <sys/param.h>
#include <sys/mount.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../ubase.h"
#include "../util.h"
int
grabmntinfo(struct mntinfo **minfo)
{
int siz, i;
struct statfs *mntbuf;
struct mntinfo *mi;
siz = getmntinfo(&mntbuf, MNT_WAIT);
if (!siz)
eprintf("getmntinfo:");
mi = malloc(siz * sizeof(*mi));
if (!mi)
eprintf("malloc:");
for (i = 0; i < siz; i++) {
mi[i].fsname = strdup(mntbuf[i].f_mntfromname);
mi[i].mntdir = strdup(mntbuf[i].f_mntonname);
}
*minfo = mi;
return siz;
}

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ubase.h Normal file
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/* See LICENSE file for copyright and license details. */
struct mntinfo {
const char *fsname;
const char *mntdir;
};
int grabmntinfo(struct mntinfo **minfo);

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util.h Normal file
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/* See LICENSE file for copyright and license details. */
#include "arg.h"
#define UTF8_POINT(c) (((c) & 0xc0) != 0x80)
#define LEN(x) (sizeof (x) / sizeof *(x))
extern char *argv0;
void eprintf(const char *, ...);
void enprintf(int, const char *, ...);
long estrtol(const char *, int);

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util/eprintf.c Normal file
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/* See LICENSE file for copyright and license details. */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../util.h"
char *argv0;
static void venprintf(int, const char *, va_list);
void
eprintf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
venprintf(EXIT_FAILURE, fmt, ap);
va_end(ap);
}
void
enprintf(int status, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
venprintf(status, fmt, ap);
va_end(ap);
}
void
venprintf(int status, const char *fmt, va_list ap)
{
/*fprintf(stderr, "%s: ", argv0);*/
vfprintf(stderr, fmt, ap);
if(fmt[0] && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
}
exit(status);
}

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util/estrtol.c Normal file
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/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include "../util.h"
long
estrtol(const char *s, int base)
{
char *end;
long n;
errno = 0;
n = strtol(s, &end, base);
if(*end != '\0') {
if(base == 0)
eprintf("%s: not an integer\n", s);
else
eprintf("%s: not a base %d integer\n", s, base);
}
if(errno != 0)
eprintf("%s:", s);
return n;
}