1
2 /*
3 * Copyright (C) Igor Sysoev
4 * Copyright (C) NGINX, Inc.
5 */
6
7 #include <nxt_main.h>
8
9
10 nxt_int_t
nxt_dyld_load(nxt_dyld_t * dyld)11 nxt_dyld_load(nxt_dyld_t *dyld)
12 {
13 const char *err;
14
15 dyld->handle = dlopen(dyld->name, RTLD_NOW | RTLD_GLOBAL);
16
17 if (dyld->handle != NULL) {
18 nxt_thread_log_debug("dlopen(\"%s\")", dyld->name);
19 return NXT_OK;
20 }
21
22 err = dlerror();
23 if (err == NULL) {
24 err = "(null)";
25 }
26
27 nxt_thread_log_alert("dlopen(\"%s\") failed: %s", dyld->name, err);
28
29 return NXT_ERROR;
30 }
31
32
33 void *
nxt_dyld_symbol(nxt_dyld_t * dyld,const char * symbol)34 nxt_dyld_symbol(nxt_dyld_t *dyld, const char *symbol)
35 {
36 void *handle, *s;
37 const char *name;
38 const char *err;
39
40 if (dyld == NXT_DYLD_ANY) {
41 handle = RTLD_DEFAULT;
42 name = "RTLD_DEFAULT";
43
44 } else {
45 handle = dyld->handle;
46 name = dyld->name;
47 }
48
49 s = dlsym(handle, symbol);
50
51 if (s != NULL) {
52 nxt_thread_log_debug("dlsym(\"%s\", \"%s\")", name, symbol);
53 return s;
54 }
55
56 err = dlerror();
57 if (err == NULL) {
58 err = "(null)";
59 }
60
61 nxt_thread_log_alert("dlsym(\"%s\", \"%s\") failed: %s", name, symbol, err);
62
63 return s;
64 }
65
66
67 nxt_int_t
nxt_dyld_unload(nxt_dyld_t * dyld)68 nxt_dyld_unload(nxt_dyld_t *dyld)
69 {
70 const char *err;
71
72 if (dlclose(dyld->handle) == 0) {
73 nxt_thread_log_debug("dlclose(\"%s\")", dyld->name);
74 return NXT_OK;
75 }
76
77 err = dlerror();
78
79 if (err == NULL) {
80 err = "(null)";
81 }
82
83 nxt_thread_log_alert("dlclose(\"%s\") failed: %s", dyld->name, err);
84
85 return NXT_ERROR;
86 }
87