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1 | .\" This manpage is Copyright (C) 2006, Michael Kerrisk |
2 | .\" | |
93015253 | 3 | .\" %%%LICENSE_START(VERBATIM) |
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4 | .\" Permission is granted to make and distribute verbatim copies of this |
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8 | .\" Permission is granted to copy and distribute modified versions of this | |
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11 | .\" permission notice identical to this one. | |
c13182ef | 12 | .\" |
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13 | .\" Since the Linux kernel and libraries are constantly changing, this |
14 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
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c13182ef | 20 | .\" |
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21 | .\" Formatted or processed versions of this manual, if unaccompanied by |
22 | .\" the source, must acknowledge the copyright and authors of this work. | |
4b72fb64 | 23 | .\" %%%LICENSE_END |
60652159 | 24 | .\" |
4b8c67d9 | 25 | .TH FUTIMESAT 2 2017-09-15 "Linux" "Linux Programmer's Manual" |
60652159 | 26 | .SH NAME |
0bfa087b | 27 | futimesat \- change timestamps of a file relative to a \ |
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28 | directory file descriptor |
29 | .SH SYNOPSIS | |
30 | .nf | |
b3f30a82 | 31 | .B #include <fcntl.h> /* Definition of AT_* constants */ |
ba78c947 | 32 | .B #include <sys/time.h> |
68e4db0a | 33 | .PP |
c13182ef | 34 | .BI "int futimesat(int " dirfd ", const char *" pathname , |
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35 | .BI " const struct timeval " times [2]); |
36 | .fi | |
68e4db0a | 37 | .PP |
7cc796ee MK |
38 | .in -4n |
39 | Feature Test Macro Requirements for glibc (see | |
40 | .BR feature_test_macros (7)): | |
41 | .in | |
68e4db0a | 42 | .PP |
7cc796ee | 43 | .BR futimesat (): |
ba78c947 | 44 | _GNU_SOURCE |
60652159 | 45 | .SH DESCRIPTION |
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46 | This system call is obsolete. |
47 | Use | |
48 | .BR utimensat (2) | |
49 | instead. | |
efeece04 | 50 | .PP |
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51 | The |
52 | .BR futimesat () | |
53 | system call operates in exactly the same way as | |
54 | .BR utimes (2), | |
55 | except for the differences described in this manual page. | |
efeece04 | 56 | .PP |
c13182ef | 57 | If the pathname given in |
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58 | .I pathname |
59 | is relative, then it is interpreted relative to the directory | |
60 | referred to by the file descriptor | |
0daa9e92 | 61 | .I dirfd |
c13182ef | 62 | (rather than relative to the current working directory of |
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63 | the calling process, as is done by |
64 | .BR utimes (2) | |
65 | for a relative pathname). | |
efeece04 | 66 | .PP |
1343b604 | 67 | If |
60652159 | 68 | .I pathname |
c13182ef | 69 | is relative and |
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70 | .I dirfd |
71 | is the special value | |
72 | .BR AT_FDCWD , | |
73 | then | |
74 | .I pathname | |
c13182ef | 75 | is interpreted relative to the current working |
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76 | directory of the calling process (like |
77 | .BR utimes (2)). | |
efeece04 | 78 | .PP |
1343b604 | 79 | If |
0daa9e92 | 80 | .I pathname |
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81 | is absolute, then |
82 | .I dirfd | |
60652159 | 83 | is ignored. |
47297adb | 84 | .SH RETURN VALUE |
60652159 | 85 | On success, |
c13182ef | 86 | .BR futimesat () |
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87 | returns a 0. |
88 | On error, \-1 is returned and | |
89 | .I errno | |
90 | is set to indicate the error. | |
91 | .SH ERRORS | |
92 | The same errors that occur for | |
93 | .BR utimes (2) | |
94 | can also occur for | |
95 | .BR futimesat (). | |
c13182ef | 96 | The following additional errors can occur for |
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97 | .BR futimesat (): |
98 | .TP | |
99 | .B EBADF | |
100 | .I dirfd | |
101 | is not a valid file descriptor. | |
102 | .TP | |
103 | .B ENOTDIR | |
104 | .I pathname | |
b328773d | 105 | is relative and |
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106 | .I dirfd |
107 | is a file descriptor referring to a file other than a directory. | |
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108 | .SH VERSIONS |
109 | .BR futimesat () | |
c95b6ae1 MK |
110 | was added to Linux in kernel 2.6.16; |
111 | library support was added to glibc in version 2.4. | |
47297adb | 112 | .SH CONFORMING TO |
c8f2dd47 | 113 | This system call is nonstandard. |
7c40de08 | 114 | It was implemented from a specification that was proposed for POSIX.1, |
25fddfcd | 115 | but that specification was replaced by the one for |
41325efd | 116 | .BR utimensat (2). |
efeece04 | 117 | .PP |
60652159 | 118 | A similar system call exists on Solaris. |
d597239c | 119 | .SH NOTES |
c634028a | 120 | .SS Glibc notes |
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121 | If |
122 | .I pathname | |
c13182ef | 123 | is NULL, then the glibc |
0bfa087b | 124 | .BR futimesat () |
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125 | wrapper function updates the times for the file referred to by |
126 | .IR dirfd . | |
127 | .\" The Solaris futimesat() also has this strangeness. | |
47297adb | 128 | .SH SEE ALSO |
60652159 | 129 | .BR stat (2), |
25fddfcd | 130 | .BR utimensat (2), |
60652159 | 131 | .BR utimes (2), |
19f6943d | 132 | .BR futimes (3), |
ad7cc990 | 133 | .BR path_resolution (7) |