1 | /* |
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2 | * IMFS_symlink |
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3 | * |
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4 | * The following rouine creates a new symbolic link node under parent |
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5 | * with the name given in name. The node is set to point to the node at |
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6 | * to_loc. |
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7 | * |
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8 | * COPYRIGHT (c) 1989-2009. |
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9 | * On-Line Applications Research Corporation (OAR). |
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10 | * |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.com/license/LICENSE. |
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14 | * |
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15 | * $Id$ |
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16 | */ |
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17 | |
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18 | #if HAVE_CONFIG_H |
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19 | #include "config.h" |
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20 | #endif |
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21 | |
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22 | #include <errno.h> |
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23 | #include <string.h> |
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24 | #include <stdlib.h> |
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25 | #include "imfs.h" |
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26 | #include <rtems/libio_.h> |
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27 | #include <rtems/seterr.h> |
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28 | |
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29 | int IMFS_symlink( |
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30 | rtems_filesystem_location_info_t *parent_loc, |
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31 | const char *link_name, |
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32 | const char *node_name |
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33 | ) |
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34 | { |
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35 | IMFS_types_union info; |
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36 | IMFS_jnode_t *new_node; |
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37 | char new_name[ IMFS_NAME_MAX + 1 ]; |
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38 | int i; |
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39 | |
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40 | /* |
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41 | * Remove any separators at the end of the string. |
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42 | */ |
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43 | IMFS_get_token( node_name, strlen( node_name ), new_name, &i ); |
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44 | |
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45 | /* |
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46 | * Duplicate link name |
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47 | */ |
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48 | info.sym_link.name = strdup(link_name); |
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49 | if (info.sym_link.name == NULL) { |
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50 | rtems_set_errno_and_return_minus_one(ENOMEM); |
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51 | } |
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52 | |
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53 | /* |
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54 | * Create a new link node. |
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55 | * |
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56 | * NOTE: Coverity CID 22 notes this as a resource leak. |
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57 | * While technically not a leak, it indicated that IMFS_create_node |
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58 | * was ONLY passed a NULL when we created the root node. We |
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59 | * added a new IMFS_create_root_node() so this path no longer |
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60 | * existed. The result was simpler code which should not have |
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61 | * this path. |
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62 | */ |
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63 | new_node = IMFS_create_node( |
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64 | parent_loc, |
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65 | IMFS_SYM_LINK, |
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66 | new_name, |
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67 | ( S_IFLNK | ( S_IRWXU | S_IRWXG | S_IRWXO )), |
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68 | &info |
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69 | ); |
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70 | |
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71 | if (new_node == NULL) { |
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72 | free(info.sym_link.name); |
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73 | rtems_set_errno_and_return_minus_one(ENOMEM); |
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74 | } |
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75 | |
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76 | return 0; |
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77 | } |
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