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	efunc.h - blind - suckless command-line video editing utility
	git clone git://git.suckless.org/blind
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	---
	efunc.h (1576B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <sys/wait.h>
	3 #include <unistd.h>
	4
	5 #define eexecvp(F, ...) (execvp(F, __VA_ARGS__), eprintf("exec %s:", F))
	6 #define eexeclp(F, ...) (execlp(F, __VA_ARGS__), eprintf("exec %s:", F))
	7
	8 static inline void
	9 epipe(int fds[2])
	10 {
	11 if (pipe(fds))
	12 eprintf("pipe:");
	13 }
	14
	15 static inline pid_t
	16 efork(void)
	17 {
	18 pid_t ret = fork();
	19 if (ret < 0)
	20 eprintf("fork:");
	21 return ret;
	22 }
	23
	24 static inline void
	25 edup2(int old, int new)
	26 {
	27 if (dup2(old, new) < 0)
	28 eprintf("dup2:");
	29 }
	30
	31 static inline int
	32 edup(int fd)
	33 {
	34 int ret = dup(fd);
	35 if (ret < 0)
	36 eprintf("dup:");
	37 return ret;
	38 }
	39
	40 static inline pid_t
	41 ewaitpid(pid_t pid, int *status, int flags)
	42 {
	43 pid_t ret = waitpid(pid, status, flags);
	44 if (ret < 0)
	45 eprintf("waitpid:");
	46 return ret;
	47 }
	48
	49 static inline size_t
	50 eread(int fd, void buf, size_t n, const char fname)
	51 {
	52 ssize_t ret = read(fd, buf, n);
	53 if (ret < 0)
	54 eprintf("read %s:", fname);
	55 return (size_t)ret;
	56 }
	57
	58 static inline size_t
	59 epread(int fd, void buf, size_t n, off_t off, const char fname)
	60 {
	61 ssize_t ret = pread(fd, buf, n, off);
	62 if (ret < 0)
	63 eprintf("pread %s:", fname);
	64 return (size_t)ret;
	65 }
	66
	67 static inline size_t
	68 ewrite(int fd, void buf, size_t n, const char fname)
	69 {
	70 ssize_t ret = write(fd, buf, n);
	71 if (ret < 0) {
	72 if (errno == ECONNRESET)
	73 raise(SIGPIPE);
	74 eprintf("write %s:", fname);
	75 }
	76 return (size_t)ret;
	77 }
	78
	79 static inline off_t
	80 elseek(int fd, off_t offset, int whence, const char *fname)
	81 {
	82 off_t ret = lseek(fd, offset, whence);
	83 if (ret < 0)
	84 eprintf("lseek %s:", fname);
	85 return ret;
	86 }