initial commit

Makefile

@@ -0,0 +1,14 @@
+SHELL = /bin/sh
+.SUFFIXES = .c
+
+CFLAGS = -Wall -Wextra --std=c99 -Ofast -flto -fPIC -march=native
+
+CC=gcc
+STRIP=strip
+
+default:
+	$(CC) $(CFLAGS) filefiller.c -o filefiller
+	$(STRIP) ./filefiller
+
+install:
+	cp filefiller /usr/bin/filefiller

filefiller.c

@@ -0,0 +1,119 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <string.h>
+#include <errno.h>
+
+/* explicitly compile with -D_OFFSET_FILE_BITS=64 if it fails at 2G */
+#define _FILE_OFFSET_BITS 64
+
+#define TUI
+#define BARLEN 200
+
+#define NAME "filefiller"
+#define VERSION "0.1"
+#define ME "cancer"
+
+
+/* #define DEBUG */
+#define BLOCKSIZE (unsigned long long)4096
+#define REFRESHINTERVAL 1024
+#define FILLCHAR 0x00
+
+void usage(char *binname) {
+    printf("%s v%s\n\n Usage:\n %s filename blocks\n\n This executable uses:\n  BLOCKSIZE = %llu\n  REFRESHINTERVAL = %d\n  FILLCHAR = 0x%X\n\n~%s\n", NAME, VERSION, binname, BLOCKSIZE, REFRESHINTERVAL, FILLCHAR, ME);
+    exit(0);
+}
+
+int main(int argc, char **argv) {
+
+    if(argc < 3) usage(argv[0]);
+    FILE *fd;
+
+    fd = fopen(argv[1], "r");
+    if(fd != NULL) {
+        #ifdef DEBUG
+          printf("File exists, removing.");
+        #endif
+        fclose(fd);
+        remove(argv[1]);
+    }
+
+    fd = fopen(argv[1], "wb");
+
+    size_t x = 0;
+    char *b = malloc(sizeof(char)*BLOCKSIZE);
+
+    #ifdef DEBUG
+      printf("Allocated %llu bytes.\n", BLOCKSIZE);
+    #endif
+
+    unsigned long long c = atoll(argv[2]);
+    memset(b, FILLCHAR, BLOCKSIZE);
+
+    #ifdef DEBUG
+      printf("Zeroed %llu bytes.\n", BLOCKSIZE);
+    #endif
+
+    #ifdef TUI
+      puts("FILENAME PERCENT BLOCKS_DONE BLOCKS_LEFT BLOCKS_TOT FILESIZE");
+    #endif
+
+    for(unsigned long long i = 1; i <= c; i++) {
+        if((x = fwrite(b, sizeof(char), BLOCKSIZE, fd)) < BLOCKSIZE) {
+
+            #ifdef DEBUG
+              if(ferror(fd)) {
+                  printf("ferror\n");
+                  printf("%d %s \n", errno, strerror(errno));
+
+              }
+
+              else if(feof(fd)) {
+                  printf("\reof\n");
+              }
+
+              else {
+                printf("\r%d %s \n", errno, strerror(errno));
+              }
+
+              printf("Wrote %llu bytes instead of %llu.\n", (unsigned long long)x, BLOCKSIZE);
+            #endif
+
+            puts("\n");
+            fclose(fd);
+            remove(argv[1]);
+            return EXIT_FAILURE;
+        }
+
+        if(i % REFRESHINTERVAL == 0 || i == c) {
+            #ifdef TUI
+              printf("\r%-8s %-7.2lf %-11llu %-11llu %-11llu", argv[1], ((double)i/(double)c*100), i, c-i, c);
+
+              unsigned long long x = i*BLOCKSIZE;
+              char *sizes = " KMGPE";
+
+              while(x >= 1024) {
+                  x = x >> 10;
+                  sizes++;
+              }
+
+              printf("%llu%c\033[K\n[\033[7m\033[2G", x, *sizes);
+
+              for(unsigned int j = 2; j < (unsigned int)((double)i/(double)c*BARLEN); j++) {
+                  printf(" ");
+              }
+
+              printf("\033[0m\033[200G]\033[1A\r");
+            #endif
+        }
+    }
+    puts("\n");
+
+    #if defined(DEBUG) || !defined(TUI)
+      printf("Wrote %llu blocks of %llu (=%llu bytes) to file %s.\n", c, BLOCKSIZE, c*BLOCKSIZE, argv[1]);
+    #endif
+
+    free(b);
+    fclose(fd);
+}