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Commit | Line | Data |
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b1bf95bb JW |
1 | #ifndef RUN_COMMAND_H |
2 | #define RUN_COMMAND_H | |
3 | ||
f6b60983 | 4 | #ifndef NO_PTHREADS |
200a76b7 JS |
5 | #include <pthread.h> |
6 | #endif | |
7 | ||
f1000898 SP |
8 | struct child_process { |
9 | const char **argv; | |
ebcb5d16 | 10 | pid_t pid; |
c20181e3 JS |
11 | /* |
12 | * Using .in, .out, .err: | |
13 | * - Specify 0 for no redirections (child inherits stdin, stdout, | |
14 | * stderr from parent). | |
15 | * - Specify -1 to have a pipe allocated as follows: | |
16 | * .in: returns the writable pipe end; parent writes to it, | |
17 | * the readable pipe end becomes child's stdin | |
18 | * .out, .err: returns the readable pipe end; parent reads from | |
19 | * it, the writable pipe end becomes child's stdout/stderr | |
20 | * The caller of start_command() must close the returned FDs | |
21 | * after it has completed reading from/writing to it! | |
22 | * - Specify > 0 to set a channel to a particular FD as follows: | |
23 | * .in: a readable FD, becomes child's stdin | |
24 | * .out: a writable FD, becomes child's stdout/stderr | |
4f41b611 | 25 | * .err: a writable FD, becomes child's stderr |
c20181e3 JS |
26 | * The specified FD is closed by start_command(), even in case |
27 | * of errors! | |
28 | */ | |
4919bf03 | 29 | int in; |
f4bba25b | 30 | int out; |
f3b33f1d | 31 | int err; |
1568fea0 | 32 | const char *dir; |
ee493148 | 33 | const char *const *env; |
f1000898 | 34 | unsigned no_stdin:1; |
e4507ae8 | 35 | unsigned no_stdout:1; |
b73a4397 | 36 | unsigned no_stderr:1; |
f1000898 | 37 | unsigned git_cmd:1; /* if this is to be git sub-command */ |
c024beb5 | 38 | unsigned silent_exec_failure:1; |
f1000898 | 39 | unsigned stdout_to_stderr:1; |
8dba1e63 | 40 | unsigned use_shell:1; |
ccf08bc3 | 41 | void (*preexec_cb)(void); |
f1000898 SP |
42 | }; |
43 | ||
ebcb5d16 SP |
44 | int start_command(struct child_process *); |
45 | int finish_command(struct child_process *); | |
f1000898 SP |
46 | int run_command(struct child_process *); |
47 | ||
ae98a008 SB |
48 | extern int run_hook(const char *index_file, const char *name, ...); |
49 | ||
95d3c4f5 | 50 | #define RUN_COMMAND_NO_STDIN 1 |
77cb17e9 | 51 | #define RUN_GIT_CMD 2 /*If this is to be git sub-command */ |
cd83c74c | 52 | #define RUN_COMMAND_STDOUT_TO_STDERR 4 |
c024beb5 | 53 | #define RUN_SILENT_EXEC_FAILURE 8 |
8dba1e63 | 54 | #define RUN_USING_SHELL 16 |
9b0b5093 | 55 | int run_command_v_opt(const char **argv, int opt); |
3427b375 AR |
56 | |
57 | /* | |
58 | * env (the environment) is to be formatted like environ: "VAR=VALUE". | |
59 | * To unset an environment variable use just "VAR". | |
60 | */ | |
ee493148 | 61 | int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env); |
b1bf95bb | 62 | |
2d22c208 JS |
63 | /* |
64 | * The purpose of the following functions is to feed a pipe by running | |
65 | * a function asynchronously and providing output that the caller reads. | |
66 | * | |
67 | * It is expected that no synchronization and mutual exclusion between | |
68 | * the caller and the feed function is necessary so that the function | |
69 | * can run in a thread without interfering with the caller. | |
70 | */ | |
71 | struct async { | |
72 | /* | |
ae6a5609 EFL |
73 | * proc reads from in; closes it before return |
74 | * proc writes to out; closes it before return | |
2d22c208 JS |
75 | * returns 0 on success, non-zero on failure |
76 | */ | |
ae6a5609 | 77 | int (*proc)(int in, int out, void *data); |
2d22c208 | 78 | void *data; |
ae6a5609 | 79 | int in; /* caller writes here and closes it */ |
2d22c208 | 80 | int out; /* caller reads from here and closes it */ |
f6b60983 | 81 | #ifdef NO_PTHREADS |
2d22c208 | 82 | pid_t pid; |
618ebe9f | 83 | #else |
200a76b7 | 84 | pthread_t tid; |
ae6a5609 EFL |
85 | int proc_in; |
86 | int proc_out; | |
618ebe9f | 87 | #endif |
2d22c208 JS |
88 | }; |
89 | ||
90 | int start_async(struct async *async); | |
91 | int finish_async(struct async *async); | |
92 | ||
b1bf95bb | 93 | #endif |