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openbsd: fix uv_exepath(smallbuf) UV_EINVAL error

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Write as much of the path as possible to the output buffer.  Before this
commit, passing in a buffer that was too small to hold the result failed
with a UV_EINVAL error.

PR-URL: https://github.com/libuv/libuv/pull/104
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
This commit is contained in:
Ben Noordhuis 2015-01-03 09:58:43 +01:00
parent 885b1ecda0
commit d17a8e45f5
1 changed files with 8 additions and 6 deletions
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14
src/unix/openbsd.c
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@ -108,17 +108,19 @@ int uv_exepath(char* buffer, size_t* size) {
}
argsbuf_size *= 2U;
}
if (argsbuf[0] == NULL) {
err = -EINVAL; /* FIXME(bnoordhuis) More appropriate error. */
goto out;
}
*size -= 1;
exepath_size = strlen(argsbuf[0]);
if (exepath_size >= *size) {
err = -EINVAL;
goto out;
}
memcpy(buffer, argsbuf[0], exepath_size + 1U);
*size = exepath_size;
if (*size > exepath_size)
*size = exepath_size;
memcpy(buffer, argsbuf[0], *size);
buffer[*size] = '\0';
err = 0;
out: