Mercurial > hg > toybox

annotate toys/posix/chgrp.c @ 735:3aaba60133c8

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Have dirtree_add_node() set parent so error message can provide full path.
author Rob Landley <rob@landley.net>
date Thu, 06 Dec 2012 15:13:30 -0600
parents 786841fdb1e0
children 90e98cdb1b7c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* chgrp.c - Change user and group ownership
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2 *
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3 * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org>
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4 *
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5 * See http://opengroup.org/onlinepubs/9699919799/utilities/chown.html
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6 * See http://opengroup.org/onlinepubs/9699919799/utilities/chgrp.html
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7 *
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8 * TODO: group only one of [HLP]
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9
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10 USE_CHGRP(NEWTOY(chgrp, "<2hPLHRfv", TOYFLAG_BIN))
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11 USE_CHGRP(OLDTOY(chown, chgrp, "<2hPLHRfv", TOYFLAG_BIN))
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12
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13 config CHGRP
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14 bool "chgrp/chown"
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15 default y
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16 help
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17 usage: chown [-RHLP] [-fvh] [owner][:group] file...
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18 usage: chgrp [-RHLP] [-fvh] group file...
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20 Change ownership of one or more files.
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21
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22 -f suppress most error messages.
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23 -h change symlinks instead of what they point to
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24 -R recurse into subdirectories (implies -h).
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25 -H with -R change target of symlink, follow command line symlinks
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26 -L with -R change target of symlink, follow all symlinks
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27 -P with -R change symlink, do not follow symlinks (default)
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28 -v verbose output.
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29 */
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30
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31 #define FOR_chgrp
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32 #include "toys.h"
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33
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34 GLOBALS(
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35 uid_t owner;
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36 gid_t group;
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37 char *owner_name, *group_name;
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38 int symfollow;
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39 )
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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 fd, ret, flags = toys.optflags;
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44
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45 // Depth first search
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46 if (!dirtree_notdotdot(node)) return 0;
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47 if ((flags & FLAG_R) && node->data != -1 && S_ISDIR(node->st.st_mode))
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48 return DIRTREE_COMEAGAIN|((flags&FLAG_L) ? DIRTREE_SYMFOLLOW : 0);
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49
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50 fd = dirtree_parentfd(node);
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51 ret = fchownat(fd, node->name, TT.owner, TT.group,
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52 (flags&(FLAG_L|FLAG_H)) || !(flags&(FLAG_h|FLAG_R))
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53 ? 0 : AT_SYMLINK_NOFOLLOW);
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55 if (ret || (flags & FLAG_v)) {
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56 char *path = dirtree_path(node, 0);
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57 if (flags & FLAG_v)
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58 xprintf("%s %s%s%s %s\n", toys.which->name,
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59 TT.owner_name ? TT.owner_name : "",
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60 toys.which->name[2]=='o' && TT.group_name ? ":" : "",
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61 TT.group_name ? TT.group_name : "", path);
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62 if (ret == -1 && !(toys.optflags & FLAG_f))
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63 perror_msg("changing owner:group of '%s' to '%s:%s'", path,
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64 TT.owner_name, TT.group_name);
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65 free(path);
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66 }
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67 toys.exitval |= ret;
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69 return 0;
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70 }
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72 void chgrp_main(void)
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73 {
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74 int ischown = toys.which->name[2] == 'o', hl = toys.optflags&(FLAG_H|FLAG_L);
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75 char **s, *own;
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77 // Distinguish chown from chgrp
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78 if (ischown) {
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79 char *grp;
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80 struct passwd *p;
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81
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82 own = xstrdup(*toys.optargs);
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83 if ((grp = strchr(own, ':')) || (grp = strchr(own, '.'))) {
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84 *(grp++) = 0;
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85 TT.group_name = grp;
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86 }
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87 if (*own) {
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88 TT.owner_name = own;
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89 p = getpwnam(own);
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90 // TODO: trailing garbage?
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91 if (!p && isdigit(*own)) p=getpwuid(atoi(own));
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92 if (!p) error_exit("no user '%s'", own);
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93 TT.owner = p->pw_uid;
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94 }
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95 } else TT.group_name = *toys.optargs;
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96
694
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97 if (TT.group_name) {
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98 struct group *g;
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99 g = getgrnam(TT.group_name);
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100 if (!g) g=getgrgid(atoi(TT.group_name));
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101 if (!g) error_exit("no group '%s'", TT.group_name);
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102 TT.group = g->gr_gid;
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103 }
607
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104
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105 for (s=toys.optargs+1; *s; s++) {
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106 struct dirtree *new = dirtree_add_node(0, *s, hl);
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107 if (new) handle_callback(new, do_chgrp);
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108 else toys.exitval = 1;
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109 }
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110
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111 if (CFG_TOYBOX_FREE) free(own);
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112 }