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unix: fix uv_set_process_title()

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Use strncpy() to set the process title, it pads the remainder with nul bytes.
Avoids garbage output on systems where `ps aux` prints the entire proctitle
buffer, not just the characters up to the first '\0'.

Fixes joyent/node#3726.
This commit is contained in:
Ben Noordhuis 2012-07-18 00:22:06 +02:00
parent a9f6f06fea
commit b49d6f7c30
1 changed files with 8 additions and 1 deletions
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9
src/unix/proctitle.c
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@ -81,7 +81,14 @@ char** uv_setup_args(int argc, char** argv) {
uv_err_t uv_set_process_title(const char* title) {
uv_strlcpy(process_title.str, title, process_title.len);
/* proctitle doesn't need to be zero terminated, last char is always '\0'.
* Use strncpy(), it pads the remainder with nul bytes. Avoids garbage output
* on systems where `ps aux` prints the entire proctitle buffer, not just the
* characters up to the first '\0'.
*/
if (process_title.len > 0)
strncpy(process_title.str, title, process_title.len - 1);
return uv_ok_;
}