summaryrefslogtreecommitdiff
path: root/du.c
diff options
context:
space:
mode:
authorErik Andersen <andersen@codepoet.org>2000-02-08 19:58:47 +0000
committerErik Andersen <andersen@codepoet.org>2000-02-08 19:58:47 +0000
commite49d5ecbbe51718fa925b6890a735e5937cc2aa2 (patch)
treec90bda10731ad9333ce3b404f993354c9fc104b8 /du.c
parentc0bf817bbc5c7867fbe8fb76d5c39f8ee802692f (diff)
downloadbusybox-w32-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.tar.gz
busybox-w32-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.tar.bz2
busybox-w32-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.zip
Some formatting updates (ran the code through indent)
-Erik
Diffstat (limited to 'du.c')
-rw-r--r--du.c185
1 files changed, 94 insertions, 91 deletions
diff --git a/du.c b/du.c
index e2cf3f7c0..7151e3a9c 100644
--- a/du.c
+++ b/du.c
@@ -1,3 +1,4 @@
1/* vi: set sw=4 ts=4: */
1/* 2/*
2 * Mini du implementation for busybox 3 * Mini du implementation for busybox
3 * 4 *
@@ -31,119 +32,121 @@
31#include <dirent.h> 32#include <dirent.h>
32#include <stdio.h> 33#include <stdio.h>
33#include <errno.h> 34#include <errno.h>
34#include <sys/param.h> /* for PATH_MAX */ 35#include <sys/param.h> /* for PATH_MAX */
35 36
36typedef void (Display)(long, char *); 37typedef void (Display) (long, char *);
37 38
38static const char du_usage[] = 39static const char du_usage[] =
39"du [OPTION]... [FILE]...\n\n"
40"\t-s\tdisplay only a total for each argument\n"
41;
42 40
43static int du_depth = 0; 41 "du [OPTION]... [FILE]...\n\n"
42 "\t-s\tdisplay only a total for each argument\n";
44 43
45static Display *print; 44static int du_depth = 0;
46 45
47static void 46static Display *print;
48print_normal(long size, char *filename) 47
48static void print_normal(long size, char *filename)
49{ 49{
50 fprintf(stdout, "%-7ld %s\n", size, filename); 50 fprintf(stdout, "%-7ld %s\n", size, filename);
51} 51}
52 52
53static void 53static void print_summary(long size, char *filename)
54print_summary(long size, char *filename)
55{ 54{
56 if (du_depth == 1) { 55 if (du_depth == 1) {
57 print_normal(size, filename); 56 print_normal(size, filename);
58 } 57 }
59} 58}
60 59
61 60
62/* tiny recursive du */ 61/* tiny recursive du */
63static long 62static long du(char *filename)
64du(char *filename)
65{ 63{
66 struct stat statbuf; 64 struct stat statbuf;
67 long sum; 65 long sum;
68 66
69 if ((lstat(filename, &statbuf)) != 0) { 67 if ((lstat(filename, &statbuf)) != 0) {
70 fprintf(stdout, "du: %s: %s\n", filename, strerror(errno)); 68 fprintf(stdout, "du: %s: %s\n", filename, strerror(errno));
71 return 0; 69 return 0;
72 }
73
74 du_depth++;
75 sum = statbuf.st_blocks;
76
77 if (S_ISDIR(statbuf.st_mode)) {
78 DIR *dir;
79 struct dirent *entry;
80
81 dir = opendir(filename);
82 if (!dir) { return 0; }
83 while ((entry = readdir(dir))) {
84 char newfile[PATH_MAX + 1];
85 char *name = entry->d_name;
86
87 if ( (strcmp(name, "..") == 0)
88 || (strcmp(name, ".") == 0))
89 { continue; }
90
91 if (strlen(filename) + strlen(name) + 1 > PATH_MAX) {
92 fprintf(stderr, name_too_long, "du");
93 return 0;
94 }
95 sprintf(newfile, "%s/%s", filename, name);
96
97 sum += du(newfile);
98 } 70 }
99 closedir(dir); 71
100 print(sum, filename); 72 du_depth++;
101 } 73 sum = statbuf.st_blocks;
102 du_depth--; 74
103 return sum; 75 if (S_ISDIR(statbuf.st_mode)) {
76 DIR *dir;
77 struct dirent *entry;
78
79 dir = opendir(filename);
80 if (!dir) {
81 return 0;
82 }
83 while ((entry = readdir(dir))) {
84 char newfile[PATH_MAX + 1];
85 char *name = entry->d_name;
86
87 if ((strcmp(name, "..") == 0)
88 || (strcmp(name, ".") == 0)) {
89 continue;
90 }
91
92 if (strlen(filename) + strlen(name) + 1 > PATH_MAX) {
93 fprintf(stderr, name_too_long, "du");
94 return 0;
95 }
96 sprintf(newfile, "%s/%s", filename, name);
97
98 sum += du(newfile);
99 }
100 closedir(dir);
101 print(sum, filename);
102 }
103 du_depth--;
104 return sum;
104} 105}
105 106
106int 107int du_main(int argc, char **argv)
107du_main(int argc, char **argv)
108{ 108{
109 int i; 109 int i;
110 char opt; 110 char opt;
111 111
112 /* default behaviour */ 112 /* default behaviour */
113 print = print_normal; 113 print = print_normal;
114 114
115 /* parse argv[] */ 115 /* parse argv[] */
116 for (i = 1; i < argc; i++) { 116 for (i = 1; i < argc; i++) {
117 if (argv[i][0] == '-') { 117 if (argv[i][0] == '-') {
118 opt = argv[i][1]; 118 opt = argv[i][1];
119 switch (opt) { 119 switch (opt) {
120 case 's': 120 case 's':
121 print = print_summary; 121 print = print_summary;
122 break; 122 break;
123 case 'h': 123 case 'h':
124 usage(du_usage); 124 usage(du_usage);
125 break; 125 break;
126 default: 126 default:
127 fprintf(stderr, "du: invalid option -- %c\n", opt); 127 fprintf(stderr, "du: invalid option -- %c\n", opt);
128 usage(du_usage); 128 usage(du_usage);
129 } 129 }
130 } else { 130 } else {
131 break; 131 break;
132 }
132 } 133 }
133 }
134 134
135 /* go through remaining args (if any) */ 135 /* go through remaining args (if any) */
136 if (i >= argc) { 136 if (i >= argc) {
137 du("."); 137 du(".");
138 } else { 138 } else {
139 long sum; 139 long sum;
140 for ( ; i < argc; i++) { 140
141 sum = du(argv[i]); 141 for (; i < argc; i++) {
142 if ((sum) && (isDirectory(argv[i], FALSE))) { print_normal(sum, argv[i]); } 142 sum = du(argv[i]);
143 if ((sum) && (isDirectory(argv[i], FALSE))) {
144 print_normal(sum, argv[i]);
145 }
146 }
143 } 147 }
144 }
145 148
146 exit(0); 149 exit(0);
147} 150}
148 151
149/* $Id: du.c,v 1.10 2000/02/07 05:29:42 erik Exp $ */ 152/* $Id: du.c,v 1.11 2000/02/08 19:58:47 erik Exp $ */
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-17 00:25:09 +0000