annotate lib/lib.h @ 593:fb582378a36a

Implement DIRTREE_SYMFOLLOW and ls -cSHL.
author Rob Landley <rob@landley.net>
date Sat, 09 Jun 2012 22:25:49 -0500
parents 7becb497c3c4
children a6a541b7fc34
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1 /* vi: set ts=4 :*/
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2 /* lib.h - header file for lib directory
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3 *
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4 * Copyright 2006 Rob Landley <rob@landley.net>
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5 */
2
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6
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7 // Unfortunately, sizeof() doesn't work in a preprocessor test. TODO.
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8
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9 //#if sizeof(double) <= sizeof(long)
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10 //typedef double FLOAT;
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11 //#else
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12 typedef float FLOAT;
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13 //#endif
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14
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15 // libc generally has this, but the headers are screwed up
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16 ssize_t getline(char **lineptr, size_t *n, FILE *stream);
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17
20
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18 // llist.c
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19
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20 // All these list types can be handled by the same code because first element
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21 // is always next pointer, so next = (mytype *)&struct.
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22
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23 struct string_list {
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24 struct string_list *next;
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25 char str[0];
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26 };
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28 struct arg_list {
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29 struct arg_list *next;
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30 char *arg;
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31 };
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32
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33 struct double_list {
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34 struct double_list *next, *prev;
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35 char *data;
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36 };
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37
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38 void llist_free(void *list, void (*freeit)(void *data));
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39 void *llist_pop(void *list); // actually void **list, but the compiler's dumb
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40 void dlist_add_nomalloc(struct double_list **list, struct double_list *new);
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41 struct double_list *dlist_add(struct double_list **list, char *data);
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42
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43 // args.c
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44 void get_optflags(void);
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45
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46 // dirtree.c
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48 // Values returnable from callback function (bitfield, or them together)
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49 // Default with no callback is 0
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51 // Add this node to the tree
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52 #define DIRTREE_SAVE 1
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53 // Recurse into children
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54 #define DIRTREE_RECURSE 2
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55 // Call again after handling all children of this directory
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56 // (Ignored for non-directories, sets linklen = -1 before second call.)
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57 #define DIRTREE_COMEAGAIN 4
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58 // Follow symlinks to directories
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59 #define DIRTREE_SYMFOLLOW 8
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60 // Don't look at any more files in this directory.
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61 #define DIRTREE_ABORT 256
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63 #define DIRTREE_ABORTVAL ((struct dirtree *)1)
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64
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65 struct dirtree {
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66 struct dirtree *next, *parent, *child;
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67 long extra; // place for user to store their stuff (can be pointer)
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68 long data; // dirfd for directory, linklen for symlink
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69 struct stat st;
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70 char *symlink;
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71 char name[];
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72 };
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73
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74 struct dirtree *dirtree_add_node(int dirfd, char *name, int symfollow);
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75 char *dirtree_path(struct dirtree *node, int *plen);
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76 int dirtree_notdotdot(struct dirtree *catch);
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77 int dirtree_opennode(struct dirtree *try);
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78 struct dirtree *handle_callback(struct dirtree *new,
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79 int (*callback)(struct dirtree *node));
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80 void dirtree_recurse(struct dirtree *node,
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81 int (*callback)(struct dirtree *node), int symfollow);
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82 struct dirtree *dirtree_read(char *path, int (*callback)(struct dirtree *node));
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83
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84 // lib.c
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85 void xstrcpy(char *dest, char *src, size_t size);
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86 void verror_msg(char *msg, int err, va_list va);
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87 void error_msg(char *msg, ...);
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88 void perror_msg(char *msg, ...);
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89 void error_exit(char *msg, ...) noreturn;
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90 void perror_exit(char *msg, ...) noreturn;
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91 void *xmalloc(size_t size);
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266a462ed18c Next drop of toysh, plus more infratructure.
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92 void *xzalloc(size_t size);
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93 void *xrealloc(void *ptr, size_t size);
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94 char *xstrndup(char *s, size_t n);
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95 char *xstrdup(char *s);
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96 char *xmsprintf(char *format, ...);
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97 void xprintf(char *format, ...);
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98 void xputs(char *s);
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99 void xputc(char c);
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100 void xflush(void);
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101 void xexec(char **argv);
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102 void xaccess(char *path, int flags);
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103 void xunlink(char *path);
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104 int xcreate(char *path, int flags, int mode);
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105 int xopen(char *path, int flags);
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106 void xclose(int fd);
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107 int xdup(int fd);
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108 FILE *xfopen(char *path, char *mode);
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109 ssize_t readall(int fd, void *buf, size_t len);
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110 ssize_t writeall(int fd, void *buf, size_t len);
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111 size_t xread(int fd, void *buf, size_t len);
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112 void xreadall(int fd, void *buf, size_t len);
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113 void xwrite(int fd, void *buf, size_t len);
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114 off_t xlseek(int fd, off_t offset, int whence);
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115 char *readfile(char *name);
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116 char *xreadfile(char *name);
4
732b055e17f7 Add xmsprintf(), xgetcwd(), xgetcwd(), find_in_path().
landley@driftwood
parents: 3
diff changeset
117 char *xgetcwd(void);
95
a636e4d20f13 Add xstat(), read_dirtree(), and read_dirtree_node().
Rob Landley <rob@landley.net>
parents: 75
diff changeset
118 void xstat(char *path, struct stat *st);
16
dd10785b6532 Add xabspath(), is_file_type(), which_in_path(), and find_in_path().
Rob Landley <rob@landley.net>
parents: 8
diff changeset
119 char *xabspath(char *path);
585
1dcd7994abea Add xrealpath() at suggestion of Ashish Briggers.
Rob Landley <rob@landley.net>
parents: 580
diff changeset
120 char *xrealpath(char *path);
292
b4077be6c746 Update mdev to work around the newest sysfs api breakage in the 2.6.25 kernel.
Rob Landley <rob@landley.net>
parents: 284
diff changeset
121 void xchdir(char *path);
216
5697a3f7c8cf Make patch's file add actually work, including directory creating and
Rob Landley <rob@landley.net>
parents: 214
diff changeset
122 void xmkpath(char *path, int mode);
370
c7a26e26ad08 Add TOYBOX_SUID.
Rob Landley <rob@landley.net>
parents: 369
diff changeset
123 void xsetuid(uid_t uid);
20
3981c96f9285 Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents: 16
diff changeset
124 struct string_list *find_in_path(char *path, char *filename);
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
125 void utoa_to_buf(unsigned n, char *buf, unsigned buflen);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
126 void itoa_to_buf(int n, char *buf, unsigned buflen);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
127 char *utoa(unsigned n);
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
128 char *itoa(int n);
102
aa4fa2543a65 Add atolx() which understands extensions for kilobytes and megabytes and such.
Rob Landley <rob@landley.net>
parents: 97
diff changeset
129 long atolx(char *c);
565
44abf4d901f3 Rewrite dirtree so we don't need readdir, scandir, and fts.h. Rewrite ls (from scratch) to use new dirtree infrastructure. (This breaks everything else that currently uses dirtree.)
Rob Landley <rob@landley.net>
parents: 551
diff changeset
130 int numlen(long l);
75
89ca591a9236 More random progress on mke2fs. Nothing to see yet.
Rob Landley <rob@landley.net>
parents: 70
diff changeset
131 off_t fdlength(int fd);
115
19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid
Rob Landley <rob@landley.net>
parents: 102
diff changeset
132 char *xreadlink(char *name);
397
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 370
diff changeset
133 void loopfiles_rw(char **argv, int flags, int permissions, int failok,
b7afbc6b753a Forgot to check in loopfiles_rw changes needed by truncate.
Rob Landley <rob@landley.net>
parents: 370
diff changeset
134 void (*function)(int fd, char *name));
185
29e2051296fd Add loopfiles() function, make catv use it.
Rob Landley <rob@landley.net>
parents: 167
diff changeset
135 void loopfiles(char **argv, void (*function)(int fd, char *name));
284
603275a05524 Teach get_rawline() to continue until a configurable char, and xstrndup()
Rob Landley <rob@landley.net>
parents: 263
diff changeset
136 char *get_rawline(int fd, long *plen, char end);
201
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 185
diff changeset
137 char *get_line(int fd);
5d523752715a Start of "patch" support. Writes to stdout at the moment.
Rob Landley <rob@landley.net>
parents: 185
diff changeset
138 void xsendfile(int in, int out);
590
7becb497c3c4 Update chmod to work with new dirtree, and fix bugs in string_to_mode().
Rob Landley <rob@landley.net>
parents: 589
diff changeset
139 int wfchmodat(int rc, char *name, mode_t mode);
209
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
140 int copy_tempfile(int fdin, char *name, char **tempname);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
141 void delete_tempfile(int fdin, int fdout, char **tempname);
9a0d4e8a9c61 Patch command.
Rob Landley <rob@landley.net>
parents: 201
diff changeset
142 void replace_tempfile(int fdin, int fdout, char **tempname);
337
aaafa1ceaa91 Add -N, -I, -L, and -P options to cksum.
Rob Landley <rob@landley.net>
parents: 334
diff changeset
143 void crc_init(unsigned int *crc_table, int little_endian);
419
af0cca0aba9d Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents: 417
diff changeset
144 void terminal_size(unsigned *x, unsigned *y);
503
3b9dea897dc0 Upgrade yesno() and make cp -i use it.
Rob Landley <rob@landley.net>
parents: 498
diff changeset
145 int yesno(char *prompt, int def);
478
7f292460d268 And again, I forgot to check in a file. Oops.
Rob Landley <rob@landley.net>
parents: 475
diff changeset
146 void for_each_pid_with_name_in(char **names, void (*callback)(pid_t pid));
419
af0cca0aba9d Quick and dirty terminal_size() and yesno() functions, both of which need to be improved.
Rob Landley <rob@landley.net>
parents: 417
diff changeset
147
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
148
3
266a462ed18c Next drop of toysh, plus more infratructure.
landley@driftwood
parents: 2
diff changeset
149 // getmountlist.c
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
150 struct mtab_list {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
151 struct mtab_list *next;
7
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
152 struct stat stat;
fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices.
landley@driftwood
parents: 4
diff changeset
153 struct statvfs statvfs;
2
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
154 char *dir;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
155 char *device;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
156 char type[0];
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
157 };
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
158
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
159 struct mtab_list *getmountlist(int die);
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df.
landley@driftwood
parents:
diff changeset
160
64
67ee3a0b76e1 In bunzip replace setjmp/longjmp handling with error_exit(), replace string
Rob Landley <rob@landley.net>
parents: 63
diff changeset
161 void bunzipStream(int src_fd, int dst_fd);
498
c9aaceccd6bd Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents: 478
diff changeset
162
c9aaceccd6bd Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents: 478
diff changeset
163 // signal
c9aaceccd6bd Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents: 478
diff changeset
164
c9aaceccd6bd Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents: 478
diff changeset
165 int sig_to_num(char *pidstr);
c9aaceccd6bd Factor out common code between killall/kill and move it to lib/lib.c, plus cleanups on kill.c.
Rob Landley <rob@landley.net>
parents: 478
diff changeset
166 char *num_to_sig(int sig);
551
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 540
diff changeset
167
2548e6e590b2 Add string to mode_t parser
Daniel Walter <d.walter@0x90.at>
parents: 540
diff changeset
168 mode_t string_to_mode(char *mode_str, mode_t base);