46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#include <fcntl.h>
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#include <sys/file.h>
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#include <libreborn/util.h>
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// Safe Version Of pipe()
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void safe_pipe2(int pipefd[2], int flags) {
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if (pipe2(pipefd, flags) != 0) {
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ERR("Unable To Create Pipe: %s", strerror(errno));
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}
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}
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// Check If Two Percentages Are Different Enough To Be Logged
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#define SIGNIFICANT_PROGRESS 5
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int is_progress_difference_significant(int32_t new_val, int32_t old_val) {
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if (new_val != old_val) {
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if (new_val == -1 || old_val == -1) {
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return 1;
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} else if (new_val == 0 || new_val == 100) {
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return 1;
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} else {
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return new_val - old_val >= SIGNIFICANT_PROGRESS;
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}
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} else {
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return 0;
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}
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}
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// Lock File
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int lock_file(const char *file) {
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int fd = open(file, O_WRONLY | O_CREAT, S_IWUSR);
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if (fd == -1) {
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ERR("Unable To Open Lock File: %s: %s", file, strerror(errno));
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}
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if (flock(fd, LOCK_EX) == -1) {
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ERR("Unable To Lock File: %s: %s", file, strerror(errno));
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}
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return fd;
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}
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void unlock_file(const char *file, int fd) {
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if (flock(fd, LOCK_UN) == -1) {
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ERR("Unable To Unlock File: %s: %s", file, strerror(errno));
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}
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close(fd);
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}
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