Mercurial > hg > toybox
annotate toys/chgrp.c @ 589:7013fd450ff4
Changed my mind about the design again, now callback is dirtree_opennode() and recursion choice is how caller interprets flags.
author | Rob Landley <rob@landley.net> |
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date | Fri, 01 Jun 2012 20:27:51 -0500 |
parents | 9c2277b92b86 |
children | 8bee9c27c219 |
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1 /* vi: set sw=4 ts=4: |
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2 * |
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3 * chgrp.c - Change group ownership |
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4 * |
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5 * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org> |
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6 * |
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7 * See http://pubs.opengroup.org/onlinepubs/009695399/utilities/chgrp.html |
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8 * |
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9 * TODO: Add support for -h |
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10 * TODO: Add support for -H |
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11 * TODO: Add support for -L |
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12 * TODO: Add support for -P |
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13 |
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14 USE_CHGRP(NEWTOY(chgrp, "<2Rfv", TOYFLAG_BIN)) |
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15 |
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16 config CHGRP |
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17 bool "chgrp" |
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18 default y |
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19 help |
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20 usage: chgrp [-R] [-f] [-v] group file... |
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21 Change group ownership of one or more files. |
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22 |
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23 -R recurse into subdirectories. |
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24 -f suppress most error messages. |
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25 -v verbose output. |
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26 */ |
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27 |
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28 #include "toys.h" |
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29 |
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30 #define FLAG_R 4 |
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31 #define FLAG_f 2 |
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32 #define FLAG_v 1 |
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33 |
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34 DEFINE_GLOBALS( |
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35 gid_t group; |
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36 char *group_name; |
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37 ) |
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38 |
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39 #define TT this.chgrp |
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40 |
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41 static int do_chgrp(struct dirtree *node) |
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42 { |
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43 int ret, flags = toys.optflags; |
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44 |
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Changed my mind about the design again, now callback is dirtree_opennode() and recursion choice is how caller interprets flags.
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45 ret = dirtree_opennode(node); |
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46 if (!ret || ((flags & FLAG_R) && ret == DIRTREE_COMEAGAIN)) return ret; |
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47 |
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48 if (node->extra != -1) ret = fchown(node->extra, -1, TT.group); |
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49 |
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50 if (ret || (flags & FLAG_v)) { |
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51 char *path = dirtree_path(node, 0); |
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52 if (flags & FLAG_v) |
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53 xprintf("chgrp(%s, %s)\n", TT.group_name, path); |
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54 if (ret == -1 && !(toys.optflags & FLAG_f)) |
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55 perror_msg("changing group of '%s' to '%s'", path, TT.group_name); |
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56 free(path); |
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57 } |
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58 close(node->extra); |
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59 toys.exitval |= ret; |
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60 |
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61 return 0; |
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62 } |
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63 |
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64 void chgrp_main(void) |
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65 { |
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66 char **s; |
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67 struct group *group; |
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68 |
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69 TT.group_name = *toys.optargs; |
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70 group = getgrnam(TT.group_name); |
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71 if (!group) error_exit("no group '%s'", TT.group_name); |
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72 TT.group = group->gr_gid; |
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73 |
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74 for (s=toys.optargs+1; *s; s++) dirtree_read(*s, do_chgrp); |
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75 } |