Safeguarded dup2 and close sequence in getcmd
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parent
d4a726ad78
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10
dwmblocks.c
10
dwmblocks.c
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@ -81,11 +81,13 @@ getcmd(Block *block, int sigval)
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case 0:
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close(ConnectionNumber(dpy));
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close(fd[0]);
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if (dup2(fd[1], STDOUT_FILENO) != STDOUT_FILENO) {
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perror("getcmd - child - dup2");
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exit(1);
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if (fd[1] != STDOUT_FILENO) {
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if (dup2(fd[1], STDOUT_FILENO) != STDOUT_FILENO) {
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perror("getcmd - child - dup2");
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exit(1);
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}
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close(fd[1]);
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}
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close(fd[1]);
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if (sigval == NILL) {
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char *arg[] = { block->pathu, NULL };
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