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wait_error.c File Reference

#include "postgres.h"
#include <signal.h>
#include <sys/wait.h>

Include dependency graph for wait_error.c:

Go to the source code of this file.

Functions

char * wait_result_to_str (int exitstatus)

bool wait_result_is_signal (int exit_status, int signum)

bool wait_result_is_any_signal (int exit_status, bool include_command_not_found)

int wait_result_to_exit_code (int exit_status)

Function Documentation

◆ wait_result_is_any_signal()

bool wait_result_is_any_signal ( int exit_status,

bool include_command_not_found

)

Definition at line 121 of file wait_error.c.

122{

123 if (WIFSIGNALED(exit_status))

124 return true;

125 if (WIFEXITED(exit_status) &&

126 WEXITSTATUS(exit_status) > (include_command_not_found ? 125 : 128))

127 return true;

128 return false;

129}

WIFEXITED

#define WIFEXITED(w)

Definition: win32_port.h:150

WIFSIGNALED

#define WIFSIGNALED(w)

Definition: win32_port.h:151

WEXITSTATUS

#define WEXITSTATUS(w)

Definition: win32_port.h:152

References WEXITSTATUS, WIFEXITED, and WIFSIGNALED.

Referenced by ExecuteRecoveryCommand(), RestoreArchivedFile(), and shell_archive_file().

◆ wait_result_is_signal()

bool wait_result_is_signal ( int exit_status,

int signum

)

Definition at line 102 of file wait_error.c.

103{

104 if (WIFSIGNALED(exit_status) && WTERMSIG(exit_status) == signum)

105 return true;

106 if (WIFEXITED(exit_status) && WEXITSTATUS(exit_status) == 128 + signum)

107 return true;

108 return false;

109}

WTERMSIG

#define WTERMSIG(w)

Definition: win32_port.h:153

References WEXITSTATUS, WIFEXITED, WIFSIGNALED, and WTERMSIG.

Referenced by ClosePipeFromProgram(), and RestoreArchivedFile().

◆ wait_result_to_exit_code()

int wait_result_to_exit_code ( int exit_status )

Definition at line 138 of file wait_error.c.

139{

140 if (exit_status == -1)

141 return -1; /* failure of pclose() or system() */

142 if (WIFEXITED(exit_status))

143 return WEXITSTATUS(exit_status);

144 if (WIFSIGNALED(exit_status))

145 return 128 + WTERMSIG(exit_status);

146 /* On many systems, this is unreachable */

147 return -1;

148}

References WEXITSTATUS, WIFEXITED, WIFSIGNALED, and WTERMSIG.

Referenced by SetShellResultVariables().

◆ wait_result_to_str()

char * wait_result_to_str ( int exitstatus )

Definition at line 33 of file wait_error.c.

34{

35 char str[512];

36

37 /*

38 * To simplify using this after pclose() and system(), handle status -1

39 * first. In that case, there is no wait result but some error indicated

40 * by errno.

41 */

42 if (exitstatus == -1)

43 {

44 snprintf(str, sizeof(str), "%m");

45 }

46 else if (WIFEXITED(exitstatus))

47 {

48 /*

49 * Give more specific error message for some common exit codes that

50 * have a special meaning in shells.

51 */

52 switch (WEXITSTATUS(exitstatus))

53 {

54 case 126:

55 snprintf(str, sizeof(str), _("command not executable"));

56 break;

57

58 case 127:

59 snprintf(str, sizeof(str), _("command not found"));

60 break;

61

62 default:

63 snprintf(str, sizeof(str),

64 _("child process exited with exit code %d"),

65 WEXITSTATUS(exitstatus));

66 }

67 }

68 else if (WIFSIGNALED(exitstatus))

69 {

70#if defined(WIN32)

71 snprintf(str, sizeof(str),

72 _("child process was terminated by exception 0x%X"),

73 WTERMSIG(exitstatus));

74#else

75 snprintf(str, sizeof(str),

76 _("child process was terminated by signal %d: %s"),

77 WTERMSIG(exitstatus), pg_strsignal(WTERMSIG(exitstatus)));

78#endif

79 }

80 else

81 snprintf(str, sizeof(str),

82 _("child process exited with unrecognized status %d"),

83 exitstatus);

84

85 return pstrdup(str);

86}

_

#define _(x)

Definition: elog.c:91

str

const char * str

Definition: hashfn_unstable.h:254

pstrdup

char * pstrdup(const char *in)

Definition: mcxt.c:1759

pg_strsignal

const char * pg_strsignal(int signum)

Definition: pgstrsignal.c:39

snprintf

#define snprintf

Definition: port.h:239

References _, pg_strsignal(), pstrdup(), snprintf, str, WEXITSTATUS, WIFEXITED, WIFSIGNALED, and WTERMSIG.

Referenced by adjust_data_dir(), BaseBackup(), ClosePipeFromProgram(), ClosePipeToProgram(), do_copy(), exec_command_write(), ExecuteRecoveryCommand(), get_bin_version(), get_control_data(), modify_subscriber_sysid(), pclose_check(), RestoreArchivedFile(), run_ssl_passphrase_command(), and shell_finish_command().