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Handle error opening /dev/null in redirect_tty_output

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This fixes coverity scan defect number 7520299
This commit is contained in:
Mahmoud Al-Qudsi 2018-02-08 17:05:13 -06:00
parent 3083e0ea80
commit fbc6c68f3d
1 changed files with 3 additions and 0 deletions
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3
src/common.cpp
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@ -2091,6 +2091,9 @@ bool fish_reserved_codepoint(wchar_t c) {
void redirect_tty_output() { void redirect_tty_output() {
struct termios t; struct termios t;
int fd = open("/dev/null", O_WRONLY); int fd = open("/dev/null", O_WRONLY);
if (fd == -1) {
__fish_assert("Could not open /dev/null!", __FILE__, __LINE__, errno);
}
if (tcgetattr(STDIN_FILENO, &t) == -1 && errno == EIO) dup2(fd, STDIN_FILENO); if (tcgetattr(STDIN_FILENO, &t) == -1 && errno == EIO) dup2(fd, STDIN_FILENO);
if (tcgetattr(STDOUT_FILENO, &t) == -1 && errno == EIO) dup2(fd, STDOUT_FILENO); if (tcgetattr(STDOUT_FILENO, &t) == -1 && errno == EIO) dup2(fd, STDOUT_FILENO);
if (tcgetattr(STDERR_FILENO, &t) == -1 && errno == EIO) dup2(fd, STDERR_FILENO); if (tcgetattr(STDERR_FILENO, &t) == -1 && errno == EIO) dup2(fd, STDERR_FILENO);