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   6 .TH GETEXECATTR 3SECDB "May 27, 2014"
   7 .SH NAME
   8 getexecattr, free_execattr, setexecattr, endexecattr, getexecuser, getexecprof,
   9 match_execattr \- get execution profile entry
  10 .SH SYNOPSIS
  11 .LP
  12 .nf
  13 cc [ \fIflag\fR... ] \fIfile\fR... -lsecdb  -lsocket  -lnsl  [ \fIlibrary\fR... ]
  14 #include <exec_attr.h>
  15 #include <secdb.h>
  16 
  17 \fBexecattr_t *\fR\fBgetexecattr\fR(\fBvoid\fR);
  18 .fi
  19 
  20 .LP
  21 .nf
  22 \fBvoid\fR \fBfree_execattr\fR(\fBexecattr_t *\fR\fIep\fR);
  23 .fi
  24 
  25 .LP
  26 .nf
  27 \fBvoid\fR \fBsetexecattr\fR(\fBvoid\fR);
  28 .fi
  29 
  30 .LP
  31 .nf
  32 \fBvoid\fR \fBendexecattr\fR(\fBvoid\fR);
  33 .fi
  34 
  35 .LP
  36 .nf
  37 \fBexecattr_t *\fR\fBgetexecuser\fR(\fBconst char *\fR\fIusername\fR, \fBconst char *\fR\fItype\fR,
  38      \fBconst char *\fR\fIid\fR, \fBint\fR \fIsearch_flag\fR);
  39 .fi
  40 
  41 .LP
  42 .nf
  43 \fBexecattr_t *\fR\fBgetexecprof\fR(\fBconst char *\fR\fIprofname\fR, \fBconst char *\fR\fItype\fR,
  44      \fBconst char *\fR\fIid\fR, \fBint\fR \fIsearch_flag\fR);
  45 .fi
  46 
  47 .LP
  48 .nf
  49 \fBexecattr_t *\fR\fBmatch_execattr\fR(\fBexecattr_t *\fR\fIep\fR, \fBchar *\fR\fIprofname\fR,
  50      \fBchar *\fR\fItype\fR, \fBchar *\fR\fIid\fR);
  51 .fi
  52 
  53 .SH DESCRIPTION
  54 .sp
  55 .LP
  56 The \fBgetexecattr()\fR function returns a single \fBexec_attr\fR(4) entry.
  57 Entries can come from any of the sources specified in the
  58 \fBnsswitch.conf\fR(4) file.
  59 .sp
  60 .LP
  61 Successive calls to \fBgetexecattr()\fR return either successive
  62 \fBexec_attr\fR entries or \fINULL\fR. Because \fBgetexecattr()\fR always
  63 returns a single entry, the \fBnext\fR pointer in the  \fBexecattr_t\fR data
  64 structure points to \fINULL\fR.
  65 .sp
  66 .LP
  67 The internal representation of an \fBexec_attr\fR entry is an \fBexecattr_t\fR
  68 structure defined in  <\fBexec_attr.h\fR> with the following members:
  69 .sp
  70 .in +2
  71 .nf
  72 char              *name;   /* name of the profile */
  73 char              *type;   /* type of profile */
  74 char              *policy; /* policy under which the attributes are */
  75                            /* relevant*/
  76 char              *res1;   /* reserved for future use */
  77 char              *res2;   /* reserved for future use */
  78 char              *id;     /* unique identifier */
  79 kva_t             *attr;   /* attributes */
  80 struct execattr_s *next;   /* optional pointer to next profile */
  81 .fi
  82 .in -2
  83 
  84 .sp
  85 .LP
  86 The \fBfree_execattr()\fR function releases memory. It follows the \fBnext\fR
  87 pointers in the \fBexecattr_t\fR structure so that the entire linked list is
  88 released.
  89 .sp
  90 .LP
  91 The \fBsetexecattr()\fR function "rewinds" to the beginning of the enumeration
  92 of \fBexec_attr\fR entries. Calls to \fBgetexecuser()\fR can leave the
  93 enumeration in an indeterminate state. Therefore, \fBsetexecattr()\fR should be
  94 called before the first call to \fBgetexecattr()\fR.
  95 .sp
  96 .LP
  97 The \fBendexecattr()\fR function can be called to indicate that \fBexec_attr\fR
  98 processing is complete; the library can then close any open \fBexec_attr\fR
  99 file, deallocate any internal storage, and so forth.
 100 .sp
 101 .LP
 102 The \fBgetexecuser()\fR function returns a linked list of entries that match
 103 the \fItype\fR and \fIid\fR arguments and have a profile that has been assigned
 104 to the user specified by \fIusername\fR, as described in \fBpasswd\fR(4).
 105 Profiles for the user are obtained from the list of default profiles in
 106 \fB/etc/security/policy.conf\fR (see \fBpolicy.conf\fR(4)) and the
 107 \fBuser_attr\fR(4) database. Only entries in the name service scope for which
 108 the corresponding profile entry is found in the \fBprof_attr\fR(4) database are
 109 returned.
 110 .sp
 111 .LP
 112 The \fBgetexecprof()\fR function returns a linked list of entries that match
 113 the \fItype\fR and \fIid\fR arguments and have the profile specified by the
 114 \fIprofname\fR argument. Only entries in the name service scope for which the
 115 corresponding profile entry is found in the \fBprof_attr\fR database are
 116 returned.
 117 .sp
 118 .LP
 119 Using \fBgetexecuser()\fR and \fBgetexecprof()\fR, programmers can search  for
 120 any \fItype\fR argument, such as the manifest constant \fBKV_COMMAND\fR. The
 121 arguments are logically AND-ed together so that only entries exactly matching
 122 all of the arguments are returned. Wildcard matching applies if there is no
 123 exact match for an \fBID\fR. Any argument can be assigned the \fINULL\fR value
 124 to indicate that it is not used as part of the matching criteria. The \fB\fR
 125 search_flag controls whether the function returns the first match
 126 (\fBGET_ONE\fR), setting the \fBnext\fR pointer to \fINULL\fR or all matching
 127 entries (\fBGET_ALL\fR), using the \fBnext\fR pointer to create a linked list
 128 of all entries that meet the search criteria. See  \fBEXAMPLES\fR.
 129 .sp
 130 .LP
 131 Once a list of entries is returned by \fBgetexecuser()\fR or
 132 \fBgetexecprof()\fR, the convenience function \fBmatch_execattr()\fR can be
 133 used to identify an individual entry. It returns a pointer to the individual
 134 element with the same profile name (\fIprofname\fR), type name (\fItype\fR),
 135 and \fIid\fR. Function parameters set to \fINULL\fR are not used as part of the
 136 matching criteria. In the event that multiple entries meet the matching
 137 criteria, only a pointer to the first entry is returned. The
 138 \fBkva_match\fR(3SECDB) function can be used to look up a key in a key-value
 139 array.
 140 .SH RETURN VALUES
 141 .sp
 142 .LP
 143 Those functions returning data only return data related to the active policy.
 144 The \fBgetexecattr()\fR function returns a pointer to a  \fBexecattr_t\fR if it
 145 successfully enumerates an entry; otherwise it returns \fINULL\fR, indicating
 146 the end of the enumeration.
 147 .SH USAGE
 148 .sp
 149 .LP
 150 The \fBgetexecattr()\fR, \fBgetexecuser()\fR, and \fBgetexecprof()\fR functions
 151 all allocate memory for the pointers they return. This memory should be
 152 deallocated with the \fBfree_execattr()\fR call. The \fBmatch_execattr()\fR
 153 function does not allocate any memory. Therefore, pointers returned by this
 154 function should not be deallocated.
 155 .sp
 156 .LP
 157 Individual attributes may be referenced in the \fBattr\fR structure by calling
 158 the \fBkva_match\fR(3SECDB) function.
 159 .SH EXAMPLES
 160 .LP
 161 \fBExample 1 \fRFind all profiles that have the  \fBping\fR command.
 162 .sp
 163 .in +2
 164 .nf
 165 if ((execprof=getexecprof(NULL, KV_COMMAND, "/usr/sbin/ping",
 166     GET_ONE)) == NULL) {
 167         /* do error */
 168 }
 169 .fi
 170 .in -2
 171 
 172 .LP
 173 \fBExample 2 \fRFind the entry for the \fBping\fR command in the Network
 174 Administration Profile.
 175 .sp
 176 .in +2
 177 .nf
 178 if ((execprof=getexecprof("Network Administration", KV_COMMAND,
 179     "/usr/sbin/ping", GET_ALL))==NULL) {
 180         /* do error */
 181 }
 182 .fi
 183 .in -2
 184 
 185 .LP
 186 \fBExample 3 \fRTell everything that can be done in the Filesystem Security
 187 profile.
 188 .sp
 189 .in +2
 190 .nf
 191 if ((execprof=getexecprof("Filesystem Security", KV_NULL, NULL,
 192     GET_ALL))==NULL)) {
 193         /* do error */
 194 }
 195 .fi
 196 .in -2
 197 
 198 .LP
 199 \fBExample 4 \fRTell if the \fBtar\fR utility is in a profile assigned to user
 200 wetmore. If there is no exact profile entry, the wildcard (*), if defined, is
 201 returned.
 202 .sp
 203 .LP
 204 The following tells if the \fBtar\fR utility is in a profile assigned to user
 205 wetmore. If there is no exact profile entry, the wildcard (*), if defined, is
 206 returned.
 207 
 208 .sp
 209 .in +2
 210 .nf
 211 if ((execprof=getexecuser("wetmore", KV_COMMAND, "/usr/bin/tar",
 212     GET_ONE))==NULL) {
 213         /* do error */
 214 }
 215 .fi
 216 .in -2
 217 
 218 .SH FILES
 219 .sp
 220 .ne 2
 221 .na
 222 \fB\fB/etc/nsswitch.conf\fR\fR
 223 .ad
 224 .RS 29n
 225 configuration file lookup information for the name server switch
 226 .RE
 227 
 228 .sp
 229 .ne 2
 230 .na
 231 \fB\fB/etc/user_attr\fR\fR
 232 .ad
 233 .RS 29n
 234 extended user attributes
 235 .RE
 236 
 237 .sp
 238 .ne 2
 239 .na
 240 \fB\fB/etc/security/exec_attr\fR\fR
 241 .ad
 242 .RS 29n
 243 execution profiles
 244 .RE
 245 
 246 .sp
 247 .ne 2
 248 .na
 249 \fB\fB/etc/security/policy.conf\fR\fR
 250 .ad
 251 .RS 29n
 252 policy definitions
 253 .RE
 254 
 255 .SH ATTRIBUTES
 256 .sp
 257 .LP
 258 See \fBattributes\fR(5) for descriptions of the following attributes:
 259 .sp
 260 
 261 .sp
 262 .TS
 263 box;
 264 c | c
 265 l | l .
 266 ATTRIBUTE TYPE  ATTRIBUTE VALUE
 267 _
 268 MT-Level        MT-Safe
 269 .TE
 270 
 271 .SH SEE ALSO
 272 .sp
 273 .LP
 274 \fBgetauthattr\fR(3SECDB), \fBgetuserattr\fR(3SECDB), \fBkva_match\fR(3SECDB),
 275 \fBexec_attr\fR(4), \fBpasswd\fR(4), \fBpolicy.conf\fR(4), \fBprof_attr\fR(4),
 276 \fBuser_attr\fR(4), \fBattributes\fR(5)