trace2: make SIDs more unique

diff --git a/trace2/tr2_dst.c b/trace2/tr2_dst.c
index fd490a43ad923d2c40c7f0139e71a3d2259f8075..7d96f33420b389a10a6256f6d95a46a76f1765f3 100644 (file)
--- a/trace2/tr2_dst.c
+++ b/trace2/tr2_dst.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "trace2/tr2_dst.h"
+#include "trace2/tr2_sysenv.h"
 
 /*
  * If a Trace2 target cannot be opened for writing, we should issue a
@@ -7,17 +8,13 @@
  * or socket and beyond the user's control -- especially since every
  * git command (and sub-command) will print the message.  So we silently
  * eat these warnings and just discard the trace data.
- *
- * Enable the following environment variable to see these warnings.
  */
-#define TR2_ENVVAR_DST_DEBUG "GIT_TR2_DST_DEBUG"
-
 static int tr2_dst_want_warning(void)
 {
        static int tr2env_dst_debug = -1;
 
        if (tr2env_dst_debug == -1) {
-               const char *env_value = getenv(TR2_ENVVAR_DST_DEBUG);
+               const char *env_value = tr2_sysenv_get(TR2_SYSENV_DST_DEBUG);
                if (!env_value || !*env_value)
                        tr2env_dst_debug = 0;
                else
@@ -42,7 +39,9 @@ static int tr2_dst_try_path(struct tr2_dst *dst, const char *tgt_value)
        if (fd == -1) {
                if (tr2_dst_want_warning())
                        warning("trace2: could not open '%s' for '%s' tracing: %s",
-                               tgt_value, dst->env_var_name, strerror(errno));
+                               tgt_value,
+                               tr2_sysenv_display_name(dst->sysenv_var),
+                               strerror(errno));
 
                tr2_dst_trace_disable(dst);
                return 0;
@@ -116,7 +115,8 @@ static int tr2_dst_try_unix_domain_socket(struct tr2_dst *dst,
        if (!path || !*path) {
                if (tr2_dst_want_warning())
                        warning("trace2: invalid AF_UNIX value '%s' for '%s' tracing",
-                               tgt_value, dst->env_var_name);
+                               tgt_value,
+                               tr2_sysenv_display_name(dst->sysenv_var));
 
                tr2_dst_trace_disable(dst);
                return 0;
@@ -126,7 +126,7 @@ static int tr2_dst_try_unix_domain_socket(struct tr2_dst *dst,
            strlen(path) >= sizeof(((struct sockaddr_un *)0)->sun_path)) {
                if (tr2_dst_want_warning())
                        warning("trace2: invalid AF_UNIX path '%s' for '%s' tracing",
-                               path, dst->env_var_name);
+                               path, tr2_sysenv_display_name(dst->sysenv_var));
 
                tr2_dst_trace_disable(dst);
                return 0;
@@ -148,7 +148,8 @@ static int tr2_dst_try_unix_domain_socket(struct tr2_dst *dst,
 error:
        if (tr2_dst_want_warning())
                warning("trace2: could not connect to socket '%s' for '%s' tracing: %s",
-                       path, dst->env_var_name, strerror(e));
+                       path, tr2_sysenv_display_name(dst->sysenv_var),
+                       strerror(e));
 
        tr2_dst_trace_disable(dst);
        return 0;
@@ -168,7 +169,7 @@ static void tr2_dst_malformed_warning(struct tr2_dst *dst,
        struct strbuf buf = STRBUF_INIT;
 
        strbuf_addf(&buf, "trace2: unknown value for '%s': '%s'",
-                   dst->env_var_name, tgt_value);
+                   tr2_sysenv_display_name(dst->sysenv_var), tgt_value);
        warning("%s", buf.buf);
 
        strbuf_release(&buf);
@@ -184,7 +185,7 @@ int tr2_dst_get_trace_fd(struct tr2_dst *dst)
 
        dst->initialized = 1;
 
-       tgt_value = getenv(dst->env_var_name);
+       tgt_value = tr2_sysenv_get(dst->sysenv_var);
 
        if (!tgt_value || !strcmp(tgt_value, "") || !strcmp(tgt_value, "0") ||
            !strcasecmp(tgt_value, "false")) {
@@ -246,7 +247,8 @@ void tr2_dst_write_line(struct tr2_dst *dst, struct strbuf *buf_line)
                return;
 
        if (tr2_dst_want_warning())
-               warning("unable to write trace to '%s': %s", dst->env_var_name,
+               warning("unable to write trace to '%s': %s",
+                       tr2_sysenv_display_name(dst->sysenv_var),
                        strerror(errno));
        tr2_dst_trace_disable(dst);
 }