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-rw-r--r--e2fsprogs/chattr.c144
1 files changed, 72 insertions, 72 deletions
diff --git a/e2fsprogs/chattr.c b/e2fsprogs/chattr.c
index 1b7942e1f..82dba4adf 100644
--- a/e2fsprogs/chattr.c
+++ b/e2fsprogs/chattr.c
@@ -26,59 +26,54 @@
26#define OPT_REM 2 26#define OPT_REM 2
27#define OPT_SET 4 27#define OPT_SET 4
28#define OPT_SET_VER 8 28#define OPT_SET_VER 8
29static int flags;
30static int recursive;
31 29
32static unsigned long version; 30struct globals {
33 31 unsigned long version;
34static unsigned long af; 32 unsigned long af;
35static unsigned long rf; 33 unsigned long rf;
36static unsigned long sf; 34 smallint flags;
37 35 smallint recursive;
38struct flags_char {
39 unsigned long flag;
40 char optchar;
41};
42
43static const struct flags_char flags_array[] = {
44 { EXT2_NOATIME_FL, 'A' },
45 { EXT2_SYNC_FL, 'S' },
46 { EXT2_DIRSYNC_FL, 'D' },
47 { EXT2_APPEND_FL, 'a' },
48 { EXT2_COMPR_FL, 'c' },
49 { EXT2_NODUMP_FL, 'd' },
50 { EXT2_IMMUTABLE_FL, 'i' },
51 { EXT3_JOURNAL_DATA_FL, 'j' },
52 { EXT2_SECRM_FL, 's' },
53 { EXT2_UNRM_FL, 'u' },
54 { EXT2_NOTAIL_FL, 't' },
55 { EXT2_TOPDIR_FL, 'T' },
56 { 0, 0 }
57}; 36};
58 37
59static unsigned long get_flag(char c) 38static unsigned long get_flag(char c)
60{ 39{
61 const struct flags_char *fp; 40 /* Two separate vectors take less space than vector of structs */
62 for (fp = flags_array; fp->optchar; fp++) 41 static const char flags_letter[] = "ASDacdijsutT";
63 if (fp->optchar == c) 42 static const unsigned long flags_val[] = {
64 return fp->flag; 43 /* A */ EXT2_NOATIME_FL,
44 /* S */ EXT2_SYNC_FL,
45 /* D */ EXT2_DIRSYNC_FL,
46 /* a */ EXT2_APPEND_FL,
47 /* c */ EXT2_COMPR_FL,
48 /* d */ EXT2_NODUMP_FL,
49 /* i */ EXT2_IMMUTABLE_FL,
50 /* j */ EXT3_JOURNAL_DATA_FL,
51 /* s */ EXT2_SECRM_FL,
52 /* u */ EXT2_UNRM_FL,
53 /* t */ EXT2_NOTAIL_FL,
54 /* T */ EXT2_TOPDIR_FL,
55 };
56 const char *fp;
57
58 for (fp = flags_letter; *fp; fp++)
59 if (*fp == c)
60 return flags_val[fp - flags_letter];
65 bb_show_usage(); 61 bb_show_usage();
66} 62}
67 63
68static int decode_arg(const char *arg) 64static int decode_arg(const char *arg, struct globals *gp)
69{ 65{
70 unsigned long *fl; 66 unsigned long *fl;
71 char opt = *arg++; 67 char opt = *arg++;
72 68
69 fl = &gp->af;
73 if (opt == '-') { 70 if (opt == '-') {
74 flags |= OPT_REM; 71 gp->flags |= OPT_REM;
75 fl = &rf; 72 fl = &gp->rf;
76 } else if (opt == '+') { 73 } else if (opt == '+') {
77 flags |= OPT_ADD; 74 gp->flags |= OPT_ADD;
78 fl = ⁡
79 } else if (opt == '=') { 75 } else if (opt == '=') {
80 flags |= OPT_SET; 76 gp->flags |= OPT_SET;
81 fl = &sf;
82 } else 77 } else
83 return 0; 78 return 0;
84 79
@@ -88,30 +83,29 @@ static int decode_arg(const char *arg)
88 return 1; 83 return 1;
89} 84}
90 85
91static void change_attributes(const char *name); 86static void change_attributes(const char *name, struct globals *gp);
92 87
93static int chattr_dir_proc(const char *dir_name, struct dirent *de, 88static int chattr_dir_proc(const char *dir_name, struct dirent *de, void *gp)
94 void *private ATTRIBUTE_UNUSED)
95{ 89{
96 char *path = concat_subpath_file(dir_name, de->d_name); 90 char *path = concat_subpath_file(dir_name, de->d_name);
97 /* path is NULL if de->d_name is "." or "..", else... */ 91 /* path is NULL if de->d_name is "." or "..", else... */
98 if (path) { 92 if (path) {
99 change_attributes(path); 93 change_attributes(path, gp);
100 free(path); 94 free(path);
101 } 95 }
102 return 0; 96 return 0;
103} 97}
104 98
105static void change_attributes(const char *name) 99static void change_attributes(const char *name, struct globals *gp)
106{ 100{
107 unsigned long fsflags; 101 unsigned long fsflags;
108 struct stat st; 102 struct stat st;
109 103
110 if (lstat(name, &st) == -1) { 104 if (lstat(name, &st) != 0) {
111 bb_perror_msg("stat %s", name); 105 bb_perror_msg("stat %s", name);
112 return; 106 return;
113 } 107 }
114 if (S_ISLNK(st.st_mode) && recursive) 108 if (S_ISLNK(st.st_mode) && gp->recursive)
115 return; 109 return;
116 110
117 /* Don't try to open device files, fifos etc. We probably 111 /* Don't try to open device files, fifos etc. We probably
@@ -121,70 +115,76 @@ static void change_attributes(const char *name)
121 if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode)) 115 if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode))
122 return; 116 return;
123 117
124 if (flags & OPT_SET_VER) 118 if (gp->flags & OPT_SET_VER)
125 if (fsetversion(name, version) == -1) 119 if (fsetversion(name, gp->version) != 0)
126 bb_perror_msg("setting version on %s", name); 120 bb_perror_msg("setting version on %s", name);
127 121
128 if (flags & OPT_SET) { 122 if (gp->flags & OPT_SET) {
129 fsflags = sf; 123 fsflags = gp->af;
130 } else { 124 } else {
131 if (fgetflags(name, &fsflags) == -1) { 125 if (fgetflags(name, &fsflags) != 0) {
132 bb_perror_msg("reading flags on %s", name); 126 bb_perror_msg("reading flags on %s", name);
133 goto skip_setflags; 127 goto skip_setflags;
134 } 128 }
135 if (flags & OPT_REM) 129 /*if (gp->flags & OPT_REM) - not needed, rf is zero otherwise */
136 fsflags &= ~rf; 130 fsflags &= ~gp->rf;
137 if (flags & OPT_ADD) 131 /*if (gp->flags & OPT_ADD) - not needed, af is zero otherwise */
138 fsflags |= af; 132 fsflags |= gp->af;
133 /* What is this? And why it's not done for SET case? */
139 if (!S_ISDIR(st.st_mode)) 134 if (!S_ISDIR(st.st_mode))
140 fsflags &= ~EXT2_DIRSYNC_FL; 135 fsflags &= ~EXT2_DIRSYNC_FL;
141 } 136 }
142 if (fsetflags(name, fsflags) == -1) 137 if (fsetflags(name, fsflags) != 0)
143 bb_perror_msg("setting flags on %s", name); 138 bb_perror_msg("setting flags on %s", name);
144 139
145 skip_setflags: 140 skip_setflags:
146 if (recursive && S_ISDIR(st.st_mode)) 141 if (gp->recursive && S_ISDIR(st.st_mode))
147 iterate_on_dir(name, chattr_dir_proc, NULL); 142 iterate_on_dir(name, chattr_dir_proc, gp);
148} 143}
149 144
150int chattr_main(int argc, char **argv); 145int chattr_main(int argc, char **argv);
151int chattr_main(int argc, char **argv) 146int chattr_main(int argc, char **argv)
152{ 147{
148 struct globals g;
153 char *arg; 149 char *arg;
154 150
151 memset(&g, 0, sizeof(g));
152
155 /* parse the args */ 153 /* parse the args */
156 while ((arg = *++argv)) { 154 while ((arg = *++argv)) {
157 /* take care of -R and -v <version> */ 155 /* take care of -R and -v <version> */
158 if (arg[0] == '-') { 156 if (arg[0] == '-'
159 if (arg[1] == 'R' && arg[2] == '\0') { 157 && (arg[1] == 'R' || arg[1] == 'v')
160 recursive = 1; 158 && !arg[2]
161 continue; 159 ) {
162 } 160 if (arg[1] == 'R') {
163 if (arg[1] == 'v' && arg[2] == '\0') { 161 g.recursive = 1;
164 if (!*++argv)
165 bb_show_usage();
166 version = xatoul(*argv);
167 flags |= OPT_SET_VER;
168 continue; 162 continue;
169 } 163 }
164 /* arg[1] == 'v' */
165 if (!*++argv)
166 bb_show_usage();
167 g.version = xatoul(*argv);
168 g.flags |= OPT_SET_VER;
169 continue;
170 } 170 }
171 171
172 if (!decode_arg(arg)) 172 if (!decode_arg(arg, &g))
173 break; 173 break;
174 } 174 }
175 175
176 /* run sanity checks on all the arguments given us */ 176 /* run sanity checks on all the arguments given us */
177 if (!*argv) 177 if (!*argv)
178 bb_show_usage(); 178 bb_show_usage();
179 if ((flags & OPT_SET) && (flags & (OPT_ADD|OPT_REM))) 179 if ((g.flags & OPT_SET) && (g.flags & (OPT_ADD|OPT_REM)))
180 bb_error_msg_and_die("= is incompatible with - and +"); 180 bb_error_msg_and_die("= is incompatible with - and +");
181 if (rf & af) 181 if (g.rf & g.af)
182 bb_error_msg_and_die("can't set and unset a flag"); 182 bb_error_msg_and_die("can't set and unset a flag");
183 if (!flags) 183 if (!g.flags)
184 bb_error_msg_and_die("must use '-v', =, - or +"); 184 bb_error_msg_and_die("must use '-v', =, - or +");
185 185
186 /* now run chattr on all the files passed to us */ 186 /* now run chattr on all the files passed to us */
187 do change_attributes(*argv); while (*++argv); 187 do change_attributes(*argv, &g); while (*++argv);
188 188
189 return EXIT_SUCCESS; 189 return EXIT_SUCCESS;
190} 190}
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